113

113 is the natural number following 112 and preceding 114.

In mathematics

One hundred [and] thirteen is the 30th prime number, following 109 and preceding 127, a Sophie Germain prime, a Chen prime and a Proth prime as it is a prime number of the form 7 × 2⁴ + 1. 113 is an Eisenstein prime with no imaginary part and real part of the form 3n − 1. In base 10, this prime is a primeval number, and a permutable prime with 131 and 311.

It is a highly cototient number and a centered square number. 355/113 approximates pi to seven decimal places, with an error of less than 1/113³.

In telephony

• The fire emergency telephone number in Indonesia
• The medical emergency telephone number in Norway
• The police emergency telephone number in Italy, Luxembourg, Slovenia, and Vietnam
• The Argentina time telephone number
• The intelligence Agency telephone number in Iran

In Enduro

It is a 'Blind Pew Prime', awarded to member of enduro clubs who develop a reputation - or a skill - for getting enduro events cancelled simply by virtue of them entering a particular event, thus earning a reputation of being unlucky. This phenomenon has been cited by entrants to Transorientale, Heroes Legend and - most recently - Midwest Racing.

Other Fields

One hundred [and] thirteen is also:

• The year AD 113 or 113 BC.
• 113 AH is a year in the Islamic calendar that corresponds to 731 – 732 CE.
• The port number of the IDENT Internet protocol that helps identify the user of a particular TCP connection
• Cadmium-113m is a radioisotope and nuclear isomer with a halflife of 14.1 years
• The atomic number of an element temporarily called ununtrium.
• The number of surat al-Falaq in the Qur'an.
• 113 Amalthea is a rocky Main belt asteroid orbiting in the inner regions of the belt discovered in 1871
• OGLE-TR-113 is a distant magnitude 14.42 star in the star fields of the constellation Carina
• A113 (sometimes A-113 or A1-13) is an inside joke present as an Easter egg in animated films created by CalArts alumni, refers to a classroom number
• 113 is a French hip hop group with African and Caribbean roots. CD titles include: “113 Fout La Merde” (2002); “113 Dans L'urgence” (2003); and “113 Degrés” (2005).
• Sonnet 113 by William Shakespeare
• London Buses route 113 is a Transport for London contracted bus route in London
• STS-113 was a Space Shuttle mission to the International Space Station (ISS) flown by Space Shuttle Endeavour on November 24, 2002.
• The ill-fated STS-107 was the 113th Space Shuttle mission,
• U.S. Route 113 is a spur of U.S. Route 13 from Maryland to Delaware
• N-113 highway in northern Spain
• National Route 113 in Japan
• Route 113 in Quebec, Canada
• USS Camel (IX-113), a United States Navy Armadillo-class tanker launched October 1943
• USS Sentinel (AM-113) was Auk-class minesweeper for the United States Navy during World War II launched May 23, 1942
• USS Sitka (APA-113) was a United States Navy Bayfield-class attack transport vessel in World War II
• Strike Fighter Squadron 113 (VFA-113) is a United States Navy strike fighter squadron based at Naval Air Station Lemoore California
• Marine Fighter Squadron 113 (VMF-113) was a fighter squadron of the United States Marine Corps during World War II until 1965
• USS S-8 (SS-113) was a second-group S-class submarine of the United States Navy launched on April 21, 1920
• Psalms 113–118 constitute the Hallel, which is recited on the three great feasts, Passover, Weeks, and Tabernacles
• The TV series “Room 222” ran on ABC from 1969 to 1974 for 113 episodes
• The TV series “The Fall Guy” ran on ABC from 1981 to 1986 for 113 episodes
• The animated TV series Captain Planet and the Planeteers, ran from 1990 to 1996 (originally on TBS, for 113 episodes
• Radio stations such as 1130 WBBR, New York City; 1130 WISN, Milwaukee; and 1130 KFAN, Minneapolis
• Channel 113 on XM Radio is XM Pops - Popular Classical
• United States Supreme Court case 410 U.S. 113 (1973), more commonly known as Roe v. Wade, resulted in a landmark decision regarding abortion
• The 113th Kentucky Derby won by Alysheba on May 2, 1987

See also

• List of highways numbered 113
• National longevity recordholders
• List of oldest people
• M113

References

• Wells, D. The Penguin Dictionary of Curious and Interesting Numbers London: Penguin Group. (1987): 134