- 113 (number)
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113 Cardinal one hundred [and] thirteen Ordinal 113th
(one hundred [and] thirteenth)Factorization prime Prime 30th Divisors 1, 113 Roman numeral CXIII Binary 11100012 Octal 1618 Duodecimal 9512 Hexadecimal 7116 113 (one hundred [and] thirteen) is the natural number following 112 and preceding 114.
Contents
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 and Latvia
- The police emergency telephone number in Italy, Luxembourg, Slovenia and Vietnam
- The Argentina time telephone number
- The intelligence Agency telephone number in Iran
Other Fields
One hundred [and] thirteen is also:
- 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.
- In enduro, it is regarded as an unlucky number to be given to a race entrant and is colloquially known as a "blind pew"
- The number of surat al-Falaq in the Qur'an.
- 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[citation needed]
- Psalms 113–118 constitute the Hallel, which is recited on the three great feasts, Passover, Weeks, and Tabernacles
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
Categories:- Integers
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