--- Advertisement ---

 5 (five /faɪv/) is a number, numeral, and glyph. It is the natural number following 4 and preceding 6.Contents1 In mathematics1.1 List of basic calculations2 Evolution of the glyph 3 Science3.1 Astronomy 3.2 Biology 3.3 Computing4 Religion and culture4.1 Hinduism 4.2 Christianity 4.3 Discordianism 4.4 Islam 4.5 Judaism 4.6 Sikhism 4.7 Daoism 4.8 Other religions and cultures5 Art, entertainment, and media5.1 Fictional entities 5.2 Films 5.3 Music5.3.1 Groups 5.3.2 Other uses5.4 Television 5.5 Literature6 Sports 7 Technology 8 Miscellaneous fields 9 See also 10 References 11 External linksIn mathematics Five is the third prime number. Because it can be written as 221 + 1, five is classified as a Fermat prime; therefore a regular polygon with 5 sides (a regular pentagon) is constructible with compass and unmarked straightedge. 5 is the third Sophie Germain prime, the first safe prime, the third Catalan number, and the third Mersenne prime exponent. Five is the first Wilson prime and the third factorial prime, also an alternating factorial. Five is the first good prime.[1] It is an Eisenstein prime with no imaginary part and real part of the form 3n − 1. It is also the only number that is part of more than one pair of twin primes. Five is a congruent number.[2] Five is conjectured to be the only odd untouchable number 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. The number 5 is the fifth Fibonacci number, being 2 plus 3. 5 is also a Pell number and a Markov number, appearing in solutions to the Markov Diophantine equation: (1, 2, 5), (1, 5, 13), (2, 5, 29), (5, 13, 194), (5, 29, 433), ... ( A030452 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 numbers. 5 is the length of the hypotenuse of the smallest integer-sided right triangle. In bases 10 and 20, 5 is a 1-automorphic number. Five is the second Sierpinski number of the first kind, and can be written as S2 = (22) + 1. While polynomial equations of degree 4 and below can be solved with radicals, equations of degree 5 and higher cannot generally be so solved. This is the Abel–Ruffini theorem. This is related to the fact that the symmetric group Sn is a solvable group for n ≤ 4 and not solvable for n ≥ 5. While all graphs with 4 or fewer vertices are planar, there exists a graph with 5 vertices which is not planar: K5, the complete graph with 5 vertices. There are five Platonic solids.[3] A polygon with five sides is a pentagon. Figurate numbers representing pentagons (including five) are called pentagonal numbers. Five is also a 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. Vulgar fractions with 5 or 2 in the denominator do not yield infinite decimal expansions, unlike expansions with all other prime denominators, because they are prime factors of ten, the base. When written in the decimal system, all multiples of 5 will end in either 5 or 0. There are five Exceptional Lie groups. List of basic calculationsMultiplication 1 2 3 4 5 6 7 8 9 1011 12 13 14 15 16 17 18 19 205 × x 5 10 15 20 25 30 35 40 45 5055 60 65 70 75 80 85 90 95 100Division 1 2 3 4 5 6 7 8 9 1011 12 13 14 155 ÷ x 5 2.5 1.6 1.25 1 0.83 0.714285 0.625 0.5 0.50.45 0.416 0.384615 0.3571428 0.3x ÷ 5 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 22.2 2.4 2.6 2.8 3Exponentiation 1 2 3 4 5 6 7 8 9 1011 12 13 14 155x 5 25 125 625 3125 15625 78125 390625 1953125 976562548828125 244140625 1220703125 6103515625 30517578125x5 1 32 243 1024 3125 7776 16807 32768 59049 100000161051 248832 371293 537824 759375In 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. Evolution of the glyphThe evolution of the modern Western glyph for the numeral 5 cannot be traced back to the Indian system as for the numbers 1 to 4. The Kushana and Gupta empires in what is now India had among themselves several different glyphs which bear no resemblance to the modern glyph. The Nagari and Punjabi took these glyphs and all came up with glyphs that are similar to a lowercase "h" rotated 180°. The Ghubar Arabs transformed the glyph in several different ways, producing glyphs that were more similar to the numbers 4 or 3 than to the number 5.[4] It was from those characters that Europeans finally came up with the modern 5. While the shape of the 5 character has an ascender in most modern typefaces, in typefaces with text figures the character usually has a descender, as, for example, in . ScienceThe atomic number of boron. The number of appendages on most starfish, which exhibit pentamerism. The most destructive known hurricanes rate as 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.AstronomyMessier object M5, a magnitude 7.0 globular cluster in the constellation Serpens. The New General Catalogue object NGC 5, a magnitude 13 spiral galaxy in the constellation Andromeda. The Roman numeral V stands for dwarfs (main sequence stars) in the Yerkes spectral classification scheme. The Roman numeral V (usually) stands for the fifth-discovered satellite of a planet or minor planet (e.g. Jupiter V). There are five Lagrangian points in a two-body system.BiologyPerception is conceived to occur through five senses. Almost all amphibians, reptiles, and mammals which have fingers or toes have five of them on each extremity.[5]Computing5 is the ASCII code of the Enquiry character, which is abbreviated to ENQ.Religion and culture HinduismThe 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.ChristianityThere are traditionally Five Wounds of Jesus Christ in Christianity: the Scourging at the Pillar, the Crowning with Thorns, the wounds in Christ's hands, the wounds in Christ's feet, and the Side Wound of Christ.DiscordianismIn Discordianism, 5 is seen as a very important number. This is demonstrated in the Law of Fives, as well as in the Pentabarf, which contains five rules. Each page of the Principia Discordia—the primary religious document in Discordianism—is labeled with five digits.IslamThe Five Pillars of Islam Muslims pray to Allah five times a day In Islam, particularly Shia Islam, the Panjetan or the Five Holy Purified Ones are the members of Muhammad's family: Muhammad, Ali, Fatimah, Hasan, and Husayn and is often symbolically represented by an image of the Khamsa.JudaismThe Torah contains five books—Genesis, Exodus, Leviticus, Numbers, and Deuteronomy—which are collectively called the Five Books of Moses, the Pentateuch (Greek for "five containers", referring to the scroll cases in which the books were kept), or Humash (חומש, Hebrew for "fifth"). The book of Psalms is arranged into five books, paralleling the Five Books of Moses. The 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.SikhismThe 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 (ਕ) 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: ਕੇਸ, ਕੰਘਾ, ਕੜਾ, ਕਛਹਰਾ, ਕਿਰਪਾਨ). Also, there are five deadly evils: kam (lust), krodh (anger), moh (attachment), lobh (greed), and ankhar (ego).Daoism5 Elements 5 EmperorsOther religions and culturesAccording to ancient Greek philosophers such as Aristotle, the universe is made up of five classical elements: water, earth, air, fire, and 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 Baha'i, Christianity, Freemasonry, Satanism, Taoism, Thelema, and Wicca. In Cantonese, "five" sounds like the word "not" (character: 唔). 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, fire, earth, wood, and metal). The Japanese names for the days of the week, Tuesday through Saturday, come from these elements via the identification of the elements with the 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. 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 entitiesJames 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 (マッハ号 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, 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 to the thrones of the individual regions of Westeros (Joffrey Baratheon, Stannis Baratheon, Renly Baratheon, Robb Stark and Balon Greyjoy)FilmsTowards 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 three. Five Go Mad in Dorset (1982) was the first of the long-running series of Comic Strip Presents... television comedy films The Fifth Element (1997), a science fiction film Fast Five (2011), the fifth installment of the Fast and Furious film series. 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, 1605Music GroupsFive (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, Lenny Davidson, Rick Huxley, Denis Payton, and 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 2011–2013Other usesA perfect fifth is the most consonant harmony, and is the basis for most western tuning systems. Modern musical notation uses a musical staff made of five horizontal lines. In harmonics – the fifth partial (or 4th overtone) of a 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 triad 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.TelevisionStationsChannel 5 (UK), a television channel that broadcasts in the United Kingdom TV5 (Philippines) (former TV station ABC 5) (DWET-TV channel 5 In Metro Manila) a television network in the Philippines.SeriesBabylon 5, a science fiction television series The number 5 features in the television series Battlestar Galactica in regards to the Final Five cylons and the Temple of Five Hi-5 (Australian TV series), a television series from Australia Hi-5 (UK TV series), a television show from the United Kingdom 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): 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!LiteratureThe 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 IISportsThe 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 baseball scorekeeping, the number 5 represents the third baseman's position. In basketball:The number 5 is used to represent the position of 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 "5-second rule" refers to several related rules designed to promote continuous play. In all cases, violation of the rule results in a turnover.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 leagues, the starting left wing wears this number. An exception is the European Super League, which uses static squad numbering. In rugby union:A try is worth 5 points. One of the two starting lock forwards wears number 5, and usually jumps at number 4 in the line-out. In the French variation of the bonus points system, a bonus point in the league standings is awarded to a team that loses by 5 or fewer points.Technology5 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 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. A pentamer is an oligomer composed of five subunits.Miscellaneous fieldsInternational maritime signal flag for 5The fives of all four suits in playing cardsFive 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 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 Shakespeare. 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 (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 sweet, salty, sour, 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 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. 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 derives its name after the Sanskrit पञ्च (pañc) for having five ingredients. The Keating Five were five 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. No. 5 is the name of the iconic fragrance created by Coco Chanel. The Committee of Five was delegated to draft the United States Declaration of Independence. The 5th U.S. President was James Monroe. 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. Number Five/#00.05 is a character from the comic book series The Umbrella AcademySee alsoMathematics portalFive Families Five NationsReferences^ Sloane, N.J.A. (ed.). "Sequence A028388 (Good primes)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-01.  ^ Sloane, N.J.A. (ed.). "Sequence A003273 (Congruent numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-01.  ^ Bryan Bunch, The Kingdom of Infinite Number. New York: W. H. Freeman & Company (2000): 61 ^ Georges Ifrah, The Universal History of Numbers: From Prehistory to the Invention of the Computer transl. David Bellos et al. London: The Harvill Press (1998): 394, Fig. 24.65 ^ Kisia, S. M. (2010), Vertebrates: Structures and Functions, Biological Systems in Vertebrates, CRC Press, p. 106, ISBN 978-1-4398-4052-8, The typical limb of tetrapods is the pentadactyl limb (Gr. penta, five) that has five toes. Tetrapods evolved from an ancestor that had limbs with five toes. ... Even though the number of digits in different vertebrates may vary from five, vertebrates develop from an embryonic five-digit stage. Wells, D. The Penguin Dictionary of Curious and Interesting Numbers London: Penguin Group. (1987): 58–67External links Media related to 5 (number) at Wikimedia Commons The dictionary definition of five at Wiktionary The Number 5 The Positive Integer 5 Prime curiosities: 5v t eIntegers0s 0   1   2   3   4   5   6   7   8   9 10 11 12 13 14 15 16 17 18 1920 21 22 23 24 25 26 27 28 2930 31 32 33 34 35 36 37 38 3940 41 42 43 44 45 46 47 48 4950 51 52 53 54 55 56 57 58 5960 61 62 63 64 65 66 67 68 6970 71 72 73 74 75 76 77 78 7980 81 82 83 84 85 86 87 88 8990 91 92 93 94 95 96 97 98 99100s100 101 102 103 104 105 106 107 108 109110 111 112 113 114 115 116 117 118 119120 121 122 123 124 125 126 127 128 129130 131 132 133 134 135 136 137 138 139140 141 142 143 144 145 146 147 148 149150 151 152 153 154 155 156 157 158 159160 161 162 163 164 165 166 167 168 169170 171 172 173 174 175 176 177 178 179180 181 182 183 184 185 186 187 188 189190 191 192 193 194 195 196 197 198 199200s200 201 202 203 204 205 206 207 208 209210 211 212 213 214 215 216 217 218 219220 221 222 223 224 225 226 227 228 229230 231 232 233 234 235 236 237 238 239240 241 242 243 244 245 246 247 248 249250 251 252 253 254 255 256 257 258 259260 261 262 263 264 265 266 267 268 269270 271 272 273 274 275 276 277 278 279280 281 282 283 284 285 286 287 288 289290 291 292 293 294 295 296 297 298 299300s300 301 302 303 304 305 306 307 308 309310 311 312 313 314 315 316 317 318 319320 321 322 323 324 325 326 327 328 329330 331 332 333 334 335 336 337 338 339340 341 342 343 344 345 346 347 348 349350 351 352 353 354 355 356 357 358 359360 361 362 363 364 365 366 367 368 369370 371 372 373 374 375 376 377 378 379380 381 382 383 384 385 386 387 388 389390 391 392 393 394 395 396 397 398 399400s400 401 402 403 404 405 406 407 408 409410 411 412 413 414 415 416 417 418 419420 421 422 423 424 425 426 427 428 429430 431 432 433 434 435 436 437 438 439440 441 442 443 444 445 446 447 448 449450 451 452 453 454 455 456 457 458 459460 461 462 463 464 465 466 467 468 469470 471 472 473 474 475 476 477 478 479480 481 482 483 484 485 486 487 488 489490 491 492 493 494 495 496 497 498 499500s500 501 502 503 504 505 506 507 508 509510 511 512 513 514 515 516 517 518 519520 521 522 523 524 525 526 527 528 529530 531 532 533 534 535 536 537 538 539540 541 542 543 544 545 546 547 548 549550 551 552 553 554 555 556 557 558 559560 561 562 563 564 565 566 567 568 569570 571 572 573 574 575 576 577 578 579580 581 582 583 584 585 586 587 588 589590 591 592 593 594 595 596 597 598 599600s600 601 602 603 604 605 606 607 608 609610 611 612 613 614 615 616 617 618 619620 621 622 623 624 625 626 627 628 629630 631 632 633 634 635 636 637 638 639640 641 642 643 644 645 646 647 648 649650 651 652 653 654 655 656 657 658 659660 661 662 663 664 665 666 667 668 669670 671 672 673 674 675 676 677 678 679680 681 682 683 684 685 686 687 688 689690 691 692 693 694 695 696 697 698 699700s700 701 702 703 704 705 706 707 708 709710 711 712 713 714 715 716 717 718 719720 721 722 723 724 725 726 727 728 729730 731 732 733 734 735 736 737 738 739740 741 742 743 744 745 746 747 748 749750 751 752 753 754 755 756 757 758 759760 761 762 763 764 765 766 767 768 769770 771 772 773 774 775 776 777 778 779780 781 782 783 784 785 786 787 788 789790 791 792 793 794 795 796 797 798 799800s800 801 802 803 804 805 806 807 808 809810 811 812 813 814 815 816 817 818 819820 821 822 823 824 825 826 827 828 829830 831 832 833 834 835 836 837 838 839840 841 842 843 844 845 846 847 848 849850 851 852 853 854 855 856 857 858 859860 861 862 863 864 865 866 867 868 869870 871 872 873 874 875 876 877 878 879880 881 882 883 884 885 886 887 888 889890 891 892 893 894 895 896 897 898 899900s900 901 902 903 904 905 906 907 908 909910 911 912 913 914 915 916 917 918 919920 921 922 923 924 925 926 927 928 929930 931 932 933 934 935 936 937 938 939940 941 942 943 944 945 946 947 948 949950 951 952 953 954 955 956 957 958 959960 961 962 963 964 965 966 967 968 969970 971 972 973 974 975 976 977 978 979980 981 982 983 984 985 986 987 988 989990 991 992 993 994 995 996

.