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5 (five) is a
number A number is a mathematical object used to count, measure, and label. The original examples are the natural numbers 1, 2, 3, 4, and so forth. Numbers can be represented in language with number words. More universally, individual numbers can be re ...
, numeral and digit. It is the
natural number In mathematics, the natural numbers are those used for counting (as in "there are ''six'' coins on the table") and ordering (as in "this is the ''third'' largest city in the country"). In common mathematical terminology, words colloquially used ...
following
4
4
and preceding 6, and is a
prime number A prime number (or a prime) is a natural number greater than 1 that is not a product of two smaller natural numbers. A natural number greater than 1 that is not prime is called a composite number. For example, 5 is prime because the only ways o ...
. It has attained significance throughout history in part because typical humans have five digits on each hand.


In mathematics

Five is the third
prime number A prime number (or a prime) is a natural number greater than 1 that is not a product of two smaller natural numbers. A natural number greater than 1 that is not prime is called a composite number. For example, 5 is prime because the only ways o ...
. Since it can be written as , five is classified as a
Fermat prime In mathematics, a Fermat number, named after Pierre de Fermat, who first studied them, is a positive integer of the form :F_ = 2^ + 1, where ''n'' is a non-negative integer. The first few Fermat numbers are: : 3, 5, 17, 257, 65537, 4294967297, 1 ...
; therefore, a
regular polygon In Euclidean geometry, a regular polygon is a polygon that is equiangular (all angles are equal in measure) and equilateral (all sides have the same length). Regular polygons may be either convex or star. In the limit, a sequence of regular polygon ...
with 5 sides (a regular
pentagon In geometry, a pentagon (from the Greek πέντε ''pente'' and γωνία ''gonia'', meaning ''five'' and ''angle'') is any five-sided polygon or 5-gon. The sum of the internal angles in a simple pentagon is 540°. A pentagon may be simple or ...

pentagon
) is constructible with compass and an unmarked straightedge. Five is the third
Sophie Germain prime In number theory, a prime number ''p'' is a Sophie Germain prime if 2''p'' + 1 is also prime. The number 2''p'' + 1 associated with a Sophie Germain prime is called a safe prime. For example, 11 is a Sophie Germain prime and 2&th ...
, the first
safe prime In number theory, a prime number ''p'' is a Sophie Germain prime if 2''p'' + 1 is also prime. The number 2''p'' + 1 associated with a Sophie Germain prime is called a safe prime. For example, 11 is a Sophie Germain prime and 2&th ...
, the third
Catalan number In combinatorial mathematics, the Catalan numbers form a sequence of natural numbers that occur in various counting problems, often involving recursively defined objects. They are named after the Belgian mathematician Eugène Charles Catalan (18 ...
, and the third
Mersenne prime In mathematics, a Mersenne prime is a prime number that is one less than a power of two. That is, it is a prime number of the form for some integer . They are named after Marin Mersenne, a French Minim friar, who studied them in the early 17th c ...
exponent. Five is the first
Wilson prime A Wilson prime, named after English mathematician John Wilson, is a prime number ''p'' such that ''p''2 divides (''p'' − 1)! + 1, where "!" denotes the factorial function; compare this with Wilson's theorem, which states that ...
and the third
factorial prime A factorial prime is a prime number that is one less or one more than a factorial (all factorials greater than 1 are even). The first 10 factorial primes (for ''n'' = 1, 2, 3, 4, 6, 7, 11, 12, 14) are : :2 (0! +&nb ...
, also an
alternating factorialIn mathematics, an alternating factorial is the absolute value of the alternating sum of the first ''n'' factorials of positive integers. This is the same as their sum, with the odd-indexed factorials multiplied by −1 if ''n'' is even, and the ...
. Five is the first good prime. It is an
Eisenstein prime upright=1.5|Small Eisenstein primes. Those on the green axes are associate to a natural prime of the form 3''n'' − 1. All others have an absolute value squared equal to a natural prime. In mathematics, an Eisenstein prime is an Eisenstein integ ...
with no imaginary part and real part of the form . It is also the only number that is part of more than one pair of
twin prime A twin prime is a prime number that is either 2 less or 2 more than another prime number—for example, either member of the twin prime pair (41, 43). In other words, a twin prime is a prime that has a prime gap of two. Sometimes the term ''twin pri ...
s. Five is a
congruent number In mathematics, a congruent number is a positive integer that is the area of a right triangle with three rational number sides. A more general definition includes all positive rational numbers with this property. The sequence of (integer) congruen ...
. Five is conjectured to be the only odd
untouchable number An untouchable number is a positive integer that cannot be expressed as the sum of all the proper divisors of any positive integer (including the untouchable number itself). That is, these numbers are not in the image of the aliquot sum function. T ...
and if this is the case then five will be the only odd prime number that is not the base of an aliquot tree. Five is also the only prime that is the sum of two consecutive primes, namely 2 and 3, with these indeed being the ''only'' possible set of two consecutive primes. The number 5 is the fifth
Fibonacci number In mathematics, the Fibonacci numbers, commonly denoted , form a sequence, called the Fibonacci sequence, such that each number is the sum of the two preceding ones, starting from 0 and 1. That is, F_0=0,\quad F_1= 1, and F_n=F_ + F_ for . The ...
, being plus . It is the only Fibonacci number that is equal to its position. Five is also a
Pell number Pell is a surname shared by several notable people, listed below * Axel Rudi Pell (born 1960), German heavy metal guitar player and member of Steeler and founder of his own eponymous band * Charles Pell (1874–1936), American college football coa ...
and a
Markov number450px|The first levels of the Markov number tree A Markov number or Markoff number is a positive integer ''x'', ''y'' or ''z'' that is part of a solution to the Markov Diophantine equation :x^2 + y^2 + z^2 = 3xyz,\, studied by . The first few Mark ...
, appearing in solutions to the Markov Diophantine equation: (1, 2, 5), (1, 5, 13), (2, 5, 29), (5, 13, 194), (5, 29, 433), ... ( lists Markov numbers that appear in solutions where one of the other two terms is 5). Whereas 5 is unique in the Fibonacci sequence, in the Perrin sequence 5 is both the fifth and sixth
Perrin numberIn mathematics, the Perrin numbers are defined by the recurrence relation : for , with initial values :. The sequence of Perrin numbers starts with :3, 0, 2, 3, 2, 5, 5, 7, 10, 12, 17, 22, 29, 39, ... The number of different maximal independent s ...
s. 5 is the length of the
hypotenuse In geometry, a hypotenuse is the longest side of a right-angled triangle, the side opposite the right angle. The length of the hypotenuse of a right triangle can be found using the Pythagorean theorem, which states that the square of the length of ...

hypotenuse
of the smallest integer-sided right triangle. In bases 10 and 20, 5 is a 1-
automorphic number In mathematics, an automorphic number (sometimes referred to as a circular number) is a natural number in a given number base b whose square "ends" in the same digits as the number itself. Definition and properties Given a number base b, a natural ...
. Five is the second Sierpinski number of the first kind, and can be written as S2 = (22) + 1. While
polynomial In mathematics, a polynomial is an expression consisting of variables (also called indeterminates) and coefficients, that involves only the operations of addition, subtraction, multiplication, and non-negative integer exponentiation of variables. ...
equations of degree and below can be solved with radicals, equations of degree 5 and higher cannot generally be so solved. This is the
Abel–Ruffini theorem In mathematics, the Abel–Ruffini theorem (also known as Abel's impossibility theorem) states that there is no solution in radicals to general polynomial equations of degree five or higher with arbitrary coefficients. Here, ''general'' means that ...
. This is related to the fact that the
symmetric group In abstract algebra, the symmetric group defined over any set is the group whose elements are all the bijections from the set to itself, and whose group operation is the composition of functions. In particular, the finite symmetric group S_n de ...
''S''''n'' is a
solvable group In mathematics, more specifically in the field of group theory, a solvable group or soluble group is a group that can be constructed from abelian groups using extensions. Equivalently, a solvable group is a group whose derived series terminates in ...
for and not solvable for . While all graphs with 4 or fewer vertices are
planar Planar may refer to: Science and technology * Planar (computer graphics), computer graphics pixel information from several bitplanes * Planar (transmission line technologies) * Planar, the structure resulting from the planar process used in the man ...
, there exists a graph with 5 vertices which is not planar: ''K''5, the
complete graph Complete may refer to: Logic * Completeness (logic) * Completeness of a theory, the property of a theory that every formula in the theory's language or its negation is provable Mathematics * The completeness of the real numbers, which implies tha ...
with 5 vertices. There are five
Platonic solid In three-dimensional space, a Platonic solid is a regular, convex polyhedron. It is constructed by congruent (identical in shape and size), regular (all angles equal and all sides equal), polygonal faces with the same number of faces meeting at each ...
s. A
polygon In geometry, a polygon () is a plane figure that is described by a finite number of straight line segments connected to form a closed polygonal chain or ''polygonal circuit''. The solid plane region, the bounding circuit, or the two together, may ...

polygon
with five sides is a
pentagon In geometry, a pentagon (from the Greek πέντε ''pente'' and γωνία ''gonia'', meaning ''five'' and ''angle'') is any five-sided polygon or 5-gon. The sum of the internal angles in a simple pentagon is 540°. A pentagon may be simple or ...

pentagon
.
Figurate numberThe term figurate number is used by different writers for members of different sets of numbers, generalizing from triangular numbers to different shapes (polygonal numbers) and different dimensions (polyhedral numbers). The term can mean * polygonal ...
s representing pentagons (including five) are called
pentagonal number181px|A visual representation of the first six pentagonal numbers A pentagonal number is a figurate number that extends the concept of triangular and square numbers to the pentagon, but, unlike the first two, the patterns involved in the constructio ...
s. Five is also a
square pyramidal number In mathematics, a pyramid number, or square pyramidal number, is a figurate number that represents the number of stacked spheres in a pyramid with a square base. The square pyramidal numbers can be used to count number of squares in an grid, or ac ...

square pyramidal number
. Five is the only prime number to end in the digit 5 because all other numbers written with a 5 in the ones place under the decimal system are multiples of five. As a consequence of this, 5 is in base 10 a 1-
automorphic number In mathematics, an automorphic number (sometimes referred to as a circular number) is a natural number in a given number base b whose square "ends" in the same digits as the number itself. Definition and properties Given a number base b, a natural ...
. Vulgar fractions with 5 or in the
denominator A fraction (from Latin ', "broken") represents a part of a whole or, more generally, any number of equal parts. When spoken in everyday English, a fraction describes how many parts of a certain size there are, for example, one-half, eight-fifths, ...
do not yield infinite
decimal The decimal numeral system (also called the base-ten positional numeral system, and occasionally called denary or decanary) is the standard system for denoting integer and non-integer numbers. It is the extension to non-integer numbers of the Hi ...
expansions, unlike expansions with all other prime denominators, because they are prime factors of
ten#REDIRECT Ten {{Redirect category shell|1= {{R from other capitalisation {{R from ambiguous term ...
, the base. When written in the decimal system, all multiples of 5 will end in either 5 or . There are five exceptional Lie groups.


List of basic calculations

In the powers of 5, every power ends with the number five and from 53, if the exponent is odd, then the hundreds digit is 1; instead, if it is even, the hundreds digit is 6. In fifth powers, ends in the same digit as .


Evolution of the Arabic digit

The evolution of the modern Western digit for the numeral 5 cannot be traced back to the Indian system, as for the digits 1 to 4. The [[Kushan Empire|Kushana and [[Gupta Empire|Gupta empires in what is now [[India had among themselves several different forms that bear no resemblance to the modern digit. The [[Devanagari|Nagari and [[Punjabi language|Punjabi took these digits and all came up with forms that were similar to a lowercase "h" rotated 180°. The Ghubar Arabs transformed the digit in several different ways, producing from that were more similar to the digits 4 or 3 than to 5. It was from those digits that Europeans finally came up with the modern 5. While the shape of the character for the digit 5 has an [[Ascender (typography)|ascender in most modern [[typefaces, in typefaces with [[text figures the glyph usually has a [[descender, as, for example, in .


Science

*The [[atomic number of [[boron. *The number of appendages on most [[sea star|starfish, which exhibit [[symmetry (biology)#Pentamerism|pentamerism. *The most destructive known [[tropical cyclone|hurricanes rate as [[Saffir–Simpson hurricane wind scale#Category 5|Category 5 on the [[Saffir–Simpson hurricane wind scale. *The most destructive known [[tornadoes rate an F-5 on the [[Fujita scale or EF-5 on the [[Enhanced Fujita scale.


Astronomy

*[[Messier object [[Messier 5|M5, a magnitude 7.0 [[globular cluster in the constellation [[Serpens. *The [[New General Catalogue]
object
[[NGC 5, a [[apparent magnitude|magnitude 13 [[spiral galaxy in the [[constellation [[Andromeda (constellation)|Andromeda. *The Roman numeral V stands for dwarfs ([[main sequence stars) in the [[stellar classification|Yerkes spectral classification scheme. *The Roman numeral V (usually) stands for the fifth-discovered satellite of a planet or minor planet (e.g. [[Amalthea (moon)|Jupiter V). *There are five [[Lagrangian points in a two-body system.


Biology

*There are generally considered to be [[five senses. *Almost all amphibians, reptiles, and mammals which have fingers or toes have five of them on each extremity.


Computing

*5 is the [[ASCII code of the [[Enquiry character, which is abbreviated to ENQ.


Religion and culture


Hinduism

*The god Shiva has five faces and his Mantra is also called Panchakshari (Five Worded) mantra. *The goddess Saraswati, goddess of knowledge and intellectual is associated with Panchami or number 5. *There are five elements in this universe: Dharti, Agni, Jal, Vayu evam Akash (Earth, Fire, Water, Air and Space respectively). *The most sacred tree in Hinduism has 5 leaves in every leaf stunt. *Most of the flowers have 5 petals in them. *The epic [[Mahabharata revolves around the battle between [[Duryodhana and his 99 other brothers and the 5 [[pandava princes -[[Yudhisthira|Dharma, [[Arjuna, [[Bhima, [[Nakula and [[Sahadeva.


Christianity

*There are traditionally [[Five Wounds of [[Jesus Christ in [[Christianity: the [[Flagellation of Christ|Scourging at the Pillar, [[Crown of Thorns|the Crowning with Thorns, the wounds in Christ's hands, the wounds in Christ's feet, and the [[Holy Lance|Side Wound of Christ.


Discordianism

*In [[Discordianism, 5 is seen as a very important number. This is demonstrated in the [[Discordianism#Law of Fives|Law of Fives, as well as in the [[Discordianism#Pentabarf|Pentabarf, which contains five rules. *Each page of the [[Principia Discordia—the primary religious document in Discordianism—is labeled with five digits.


Islam

*The [[Five Pillars of Islam *[[Muslims pray to [[Allah five times a day *According to Shia Muslims, the [[Panjetan-e-Pak|Panjetan or the Five Holy Purified Ones are the members of [[Muhammad's family: [[Muhammad, [[Ali, [[Fatimah, [[Hasan ibn Ali|Hasan, and [[Husayn ibn Ali|Husayn and is often symbolically represented by an image of the Khamsa.


Judaism

*The [[Torah contains five books—[[Book of Genesis|Genesis, [[Book of Exodus|Exodus, [[Book of Leviticus|Leviticus, [[Book of Numbers|Numbers, and [[Book of Deuteronomy|Deuteronomy—which are collectively called the Five Books of [[Moses, the Pentateuch ([[Greek language|Greek for "five containers", referring to the scroll cases in which the books were kept), or [[Chumash (Judaism)|Humash (, [[Hebrew language|Hebrew for "fifth"). *The book of [[Psalms is arranged into five books, paralleling the [[Five Books of Moses. *The [[Hamsa|Khamsa, an ancient symbol shaped like a hand with four fingers and one thumb, is used as a protective amulet by [[Jews; that same symbol is also very popular in [[Arabic culture, known to protect from envy and the [[evil eye.


Sikhism

*The five sacred [[Sikh symbols prescribed by Guru Gobind Singh are commonly known as ''panj kakars'' or the "Five Ks" because they start with letter K representing ''kakka'' () in the [[Punjabi language's [[Gurmukhi script. They are: ''kesh'' (unshorn hair), ''kangha'' (the comb), ''kara'' (the steel bracelet), ''kachhehra'' (the soldiers shorts), and ''kirpan'' (the sword) (in Gurmukhi: ). Also, there are five deadly evils: ''kam'' (lust), ''krodh'' (anger), ''moh'' (attachment), ''lobh'' (greed), and ''ankhar'' (ego).


[[Tao|Daoism

*[[Wuxing (Chinese philosophy)|5 Elements *[[Three Sovereigns and Five Emperors|5 Emperors


Other religions and cultures

*According to ancient Greek philosophers such as [[Aristotle, the universe is made up of five [[classical elements: [[water (classical element)|water, [[earth (classical element)|earth, [[air (classical element)|air, [[fire (classical element)|fire, and [[aether (classical element)|ether. This concept was later adopted by Medieval [[alchemists and more recently by practitioners of [[Neo-Pagan religions such as [[Wicca. *The [[pentagram, or five-pointed star, bears religious significance in various faiths including [[Baháʼí Faith|Baháʼí, [[Christianity, [[Freemasonry, [[Satanism, [[Taoism, [[Thelema, and [[Wicca. *In [[Cantonese, "five" sounds like the word "not" (character: ). When five appears in front of a lucky number, e.g. "58", the result is considered unlucky. *In [[East Asian tradition, there are five elements: ([[water (Wu Xing)|water, [[fire (Wu Xing)|fire, [[earth (Wu Xing)|earth, [[tree (Wu Xing)|wood, and [[metal (Wu Xing)|metal). The [[Japanese language|Japanese names for the [[week-day names|days of the week, Tuesday through [[Saturday, come from these elements via the identification of the elements with the [[Classical planet|five planets visible with the naked eye. Also, the traditional Japanese calendar has a five-day weekly cycle that can be still observed in printed mixed calendars combining Western, Chinese-Buddhist, and Japanese names for each weekday. *In [[numerology, 5 or a series of [[555 (number)|555, is often associated with change, love and abundance. *Members of [[The Nation of Gods and Earths, a primarily African American religious organization, call themselves the "Five-Percenters" because they believe that only 5% of mankind is truly enlightened.


Art, entertainment, and media


Fictional entities

*[[James the Red Engine, a fictional character numbered 5. *[[Johnny 5 is the lead character in the film ''Short Circuit'' (1986) *Number Five is a character in [[Lorien Legacies *Sankara Stones, five magical rocks in ''[[Indiana Jones and the Temple of Doom'' that are sought by the Thuggees for evil purposes *The Mach Five ( Mahha-gō?), the racing car Speed Racer (Go Mifune in the Japanese version) drives in the anime series of the same name (known as "Mach Go! Go! Go!" in Japan) *In the works of [[J. R. R. Tolkien, five wizards ([[Saruman, [[Gandalf, [[Radagast, [[Blue Wizards|Alatar and Pallando) are sent to Middle-earth to aid against the threat of the Dark Lord Sauron *In the ''[[A Song of Ice and Fire'' series, the War of the Five Kings is fought between different claimants to the Iron Throne of Westeros, as well as to the thrones of the individual regions of Westeros ([[Joffrey Baratheon, [[Stannis Baratheon, [[Renly Baratheon, [[Robb Stark and [[Balon Greyjoy) *In ''[[The Wheel of Time'' series, the "Emond's Field Five" are a group of five of the series' main characters who all come from the village of Emond's Field ([[Rand al'Thor, [[Matrim Cauthon, [[Perrin Aybara, [[Egwene al'Vere and [[Nynaeve al'Meara) *[[Myst (series)|''Myst'' uses the number 5 as a unique base counting system. In ''[[The Myst Reader'' series, it is further explained that the number 5 is considered a holy number in the fictional D'ni society. *Number Five is also a character in The Umbrella Academy comic book and TV series adaptation


Films

*Towards the end of the film ''[[Monty Python and the Holy Grail'' (1975), the character of [[King Arthur repeatedly confuses the number five with the number [[3|three. *''[[Five Go Mad in Dorset'' (1982) was the first of the long-running series of ''[[The Comic Strip|The Comic Strip Presents...'' television comedy films *''[[The Fifth Element'' (1997), a science fiction film * ''[[Fast Five'' (2011), the fifth installment of the [[The Fast and the Furious (series)|''Fast and Furious'' film series. *''[[V for Vendetta (film)|V for Vendetta'' (2005), produced by [[Warner Bros., directed by [[James McTeigue, and adapted from [[Alan Moore's graphic novel ''[[V for Vendetta'' prominently features number 5 and Roman Numeral V; the story is based on the historical event in which a group of men attempted to destroy Parliament on November 5, 1605


Music


Groups

*[[Five (band), a UK Boy band *[[The Five (composers), 19th-century Russian composers *[[5 Seconds of Summer, pop band that originated in Sydney, Australia *[[Five Americans, American rock band active 1965–1969 *[[Five Finger Death Punch, American heavy metal band from Las Vegas, Nevada. Active 2005–present *[[Five Man Electrical Band, Canadian rock group billed (and active) as the Five Man Electrical Band, 1969–1975 *[[Maroon 5, American pop rock band that originated in Los Angeles, California *[[MC5, American punk rock band *[[Pentatonix, a Grammy-winning a cappella group originated in Arlington, Texas *[[The 5th Dimension, American pop vocal group, active 1977–present *[[The Dave Clark Five, a.k.a. DC5, an English pop rock group comprising [[Dave Clark (musician)|Dave Clark, [[Lenny Davidson, [[Rick Huxley, [[Denis Payton, and [[Mike Smith (Dave Clark Five)|Mike Smith; active 1958–1970 *[[The Jackson 5, American pop rock group featuring various members of the Jackson family; they were billed (and active) as The Jackson 5, 1966–1975 *[[We Five: American folk rock group active 1965–1967 and 1968–1977 *[[Grandmaster Flash and the Furious Five: American rap group, 1970–80's *[[Fifth Harmony, an American [[girl group. *[[Ben Folds Five, an American alternative rock trio, 1993–2000, 2008 and 2011–2013 *[[R5 (band), an American pop and alternative rock group, 2009–2018


Other uses

*A [[perfect fifth is the most consonant harmony, and is the basis for most western tuning systems. *Modern musical notation uses a [[staff (music)|musical staff made of five horizontal lines. *In [[harmonics – the fifth [[harmonic series (music)|partial (or 4th [[overtone) of a [[fundamental frequency|fundamental has a frequency ratio of 5:1 to the frequency of that fundamental. This ratio corresponds to the interval of 2 octaves plus a pure major third. Thus, the interval of 5:4 is the interval of the pure third. A [[major and minor|major [[Triad (music)|triad [[chord (music)|chord when played in [[just intonation (most often the case in [[a cappella vocal ensemble singing), will contain such a pure major third. *The number of completed, numbered piano concertos of [[Ludwig van Beethoven, [[Sergei Prokofiev, and [[Camille Saint-Saëns. *Using the Latin root, five musicians are called a quintet. *A scale with five notes per octave is called a [[pentatonic scale. *Five is the lowest possible number that can be the top number of a [[time signature with an asymmetric [[meter (music)|meter.


Television

;Stations *[[Channel 5 (UK), a television channel that broadcasts in the United Kingdom *[[5 (TV channel) (''formerly known as ABC 5 and TV5'') ([[DWET-TV channel 5 In Metro Manila) a television network in the Philippines. ; ;Series *''[[Babylon 5'', a science fiction television series *The number 5 features in the television series [[Battlestar Galactica (2004 TV series)|''Battlestar Galactica'' in regards to the [[Cylon (reimagining)#The "Final Five" Humanoid Cylons|Final Five [[Cylon (reimagining)|cylons and the [[List of Battlestar Galactica (reimagining) locations#T|Temple of Five *[[Hi-5 (Australian TV series)|''Hi-5'' (Australian TV series), a television series from Australia *[[Hi-5 (UK TV series)|''Hi-5'' (UK TV series), a television show from the United Kingdom *[[Hi-5 Philippines|''Hi-5'' Philippines a television show from the Philippines *''[[Odyssey 5'', a 2002 science fiction television series *''[[Tillbaka till Vintergatan'', a Swedish children's television series featuring a character named "Femman" (meaning five), only can utter the word 'five'. *''[[The Five (talk show)|The Five'' [[The Five (talk show)|(talk show): Fox News Channel roundtable current events television show, premiered 2011. So named for its panel of five commentators. *''[[Yes! PreCure 5'' is a 2007 anime series which follows the adventures of Nozomi and her friends. It is also followed by the 2008 sequel ''[[Yes! Pretty Cure 5 GoGo!'' *[[Hawaii_Five-0_(2010_TV_series)|''Hawaii Five-0'', [[CBS American TV series.


Literature

*[[The Famous Five (novel series)|''The Famous Five'' is a series of children's books by British writer Enid Blyton *''[[The Power of Five'' is a series of children's books by British writer and screenwriter Anthony Horowitz *''[[The Fall of Five'' is a book written under the collective pseudonym Pittacus Lore in the series ''Lorien Legacies'' *''[[The Book of Five Rings'' is a text on kenjutsu and the martial arts in general, written by the swordsman Miyamoto Musashi circa 1645 *''[[Slaughterhouse-Five'' is a book by Kurt Vonnegut about World War II


Sports

*The [[Olympic Games have five interlocked rings as their symbol, representing the number of inhabited [[continents represented by the Olympians (Europe, Asia, Africa, Australia and Oceania, and the Americas). * In [[AFL Women's, the top level of [[Women's Australian rules football|women's [[Australian rules football, each team is allowed 5 "[[Interchange (Australian rules football)|interchanges" (substitute players), who can be freely substituted at any time. *In [[Baseball scorekeeping#Defensive positions|baseball scorekeeping, the number 5 represents the [[third baseman's position. *In [[basketball: **The number 5 is used to represent the position of [[center (basketball)|center. **Each team has five players on the court at a given time. Thus, the phrase "five on five" is commonly used to describe standard competitive basketball. **The [[Five-second rule (basketball)|"5-second rule" refers to several related rules designed to promote continuous play. In all cases, violation of the rule results in a turnover. **Under the [[FIBA (used for all international play, and most non-US leagues) and [[College basketball|NCAA women's rule sets, a team begins shooting [[Bonus (basketball)|bonus free throws once its opponent has committed five [[Personal foul (basketball)|personal fouls in a quarter. **Under the FIBA rules, A player fouls out and must leave the game after committing five fouls *[[Five-a-side football is a variation of [[association football in which each team fields five players. *In [[ice hockey: ** A major penalty lasts five minutes. ** There are five different ways that a player can score a goal (teams at even strength, team on the power play, team playing shorthanded, penalty shot, and empty net). ** The area between the goaltender's legs is known as the [[five-hole. *In most [[rugby league competitions, the starting [[Rugby league positions#Wing|left wing wears this number. An exception is the [[Super League, which uses static squad numbering. *In [[rugby union: ** A [[Try (rugby)|try is worth 5 points. ** One of the two starting [[Lock (rugby union)|lock forwards wears number 5, and usually jumps at number 4 in the [[line-out (rugby union)|line-out. ** In the [[National Rugby League (France)|French variation of the [[Rugby union bonus points system|bonus points system, a bonus point in the league standings is awarded to a team that loses by 5 or fewer points.


Technology

*5 is the most common number of gears for automobiles with [[manual transmission. *In radio communication, the term "[[Five by five" is used to indicate perfect signal strength and clarity. *On almost all devices with a [[numeric keypad such as telephones, computers, etc., the 5 key has a raised dot or raised bar to make dialing easier. Persons who are blind or have low vision find it useful to be able to feel the keys of a telephone. All other numbers can be found with their relative position around the 5 button (on computer keyboards, the 5 key of the [[numeric keypad|numpad has the raised dot or bar, but the 5 key that shifts with % does not). *On most [[telephones, the 5 key is associated with the letters [[J, [[K, and [[L, but on some of the [[BlackBerry phones, it is the key for [[G and [[H. *The [[Pentium, coined by [[Intel Corporation, is a fifth-generation [[x86 architecture [[microprocessor. *The [[resin identification code used in recycling to identify [[polypropylene.


Miscellaneous fields

[[File:5 playing cards.jpg|250px|The fives of all four suits in [[playing cards Five can refer to: *"Give me five" is a common phrase used preceding a [[high five. *An informal term for the British Security Service, [[MI5. *Five babies born at one time are [[multiple birth|quintuplets. The most famous set of quintuplets were the [[Dionne quintuplets born in the 1930s. *In the United States legal system, the [[Fifth Amendment to the United States Constitution can be referred to in court as "pleading the fifth", absolving the defendant from [[self-incrimination. *[[Pentameter is verse with five repeating feet per line; [[iambic pentameter was the most popular form in [[William Shakespeare|Shakespeare. *[[Aether (classical element)|Quintessence, meaning "fifth element", refers to the elusive fifth element that completes the basic four elements (water, fire, air, and earth) *The designation of an [[Interstate Highway System|Interstate Highway ([[Interstate 5) that runs from [[San Diego, [[California to [[Blaine, Washington. In addition, all major north-south Interstate Highways in the United States end in 5. *The five basic [[tastes are [[sweetness|sweet, [[taste#Saltiness|salty, [[taste#Sourness|sour, [[taste#Bitterness|bitter, and [[umami. *In the computer game ''[[Riven'', 5 is considered a holy number, and is a recurring theme throughout the game, appearing in hundreds of places, from the number of islands in the game to the number of bolts on pieces of machinery. *''[[The Garden of Cyrus'' (1658) by Sir [[Thomas Browne is a Pythagorean discourse based upon the number 5. *The holy number of [[Discordianism, as dictated by the [[Discordianism#Law of Fives|Law of Fives. *The number of Justices on the [[Supreme Court of the United States necessary to render a majority decision. *The number of dots in a [[quincunx. *The number of permanent members with veto power on the [[United Nations Security Council. *The number of sides and the number of angles in a
pentagon In geometry, a pentagon (from the Greek πέντε ''pente'' and γωνία ''gonia'', meaning ''five'' and ''angle'') is any five-sided polygon or 5-gon. The sum of the internal angles in a simple pentagon is 540°. A pentagon may be simple or ...

pentagon
. *The number of points in a [[pentagram. *The number of [[Korotkoff sounds when measuring [[blood pressure *The drink [[Five Alive is named for its five ingredients. The drink [[Punch (drink)|punch derives its name after the Sanskrit पञ्च (pañc) for having five ingredients. *The [[Keating Five were five [[United States Senate|United States Senators accused of corruption in 1989. *The [[Inferior Five: Merryman, Awkwardman, The Blimp, White Feather, and Dumb Bunny. [[DC Comics parody superhero team. *[[Chanel No. 5|No. 5 is the name of the iconic fragrance created by [[Coco Chanel. *The [[Committee of Five was delegated to draft the [[United States [[United States Declaration of Independence|Declaration of Independence. *The [[five-second rule is a commonly used [[rule of thumb for dropped [[food. *555 95472, usually referred to simply as 5, is a minor male character in the comic strip ''Peanuts''.


See also

*[[Five Families *[[Five Nations (disambiguation) *[[555 (number) *[[List of highways numbered 5


References

*Wells, D. ''[[The Penguin Dictionary of Curious and Interesting Numbers'' London: Penguin Group. (1987): 58–67


External links

* *
The Number 5The Positive Integer 5
{{DEFAULTSORT:5 (Number) [[Category:Integers [[Category:5 (number)