Girish Mahajan (Editor)

113 (number)

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113
  
114 →

Factorization
  
prime

Divisors
  
1, 113

Cardinal
  
one hundred thirteen

Prime
  
30th

Ordinal
  
113th (one hundred and thirteenth)

The number 113 (pronounced one hundred thirteen) is used in many contexts.

Contents

Mathematics

  • 113 is the natural number following 112 and preceding 114.
  • It is the 30th prime number (following 109 and preceding 127), so it can only be divided by one and itself. 113 is 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 also an Eisenstein prime with no imaginary part and real part of the form 3 n − 1 . In base 10, this prime is a primeval number, and a permutable prime with 131 and 311.
  • 113 is a highly cototient number and a centered square number.
  • 355/113 approximates pi to six decimal places, with an error of less than 1/1133. This means that 113/355 approximates the reciprocal of pi.

    • Religion

  • 113, the number of surat al-Falaq in the Qur'an
  • Psalms 113–118 constitute the Hallel, which is recited on the three great feasts: Passover, Weeks, and Tabernacles

    • Science

  • 113, the atomic number of the element Nihonium
  • Cadmium-113m, a radioisotope and nuclear isomer with a halflife of 14.1 years

    • Telephony

    113 is:

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

    • Other uses

  • 113 (band), a French hip hop group
  • 113, the port number of the IDENT Internet protocol that helps identify the user of a particular TCP connection
  • 113, in enduro, is regarded as an unlucky number to be given to a race entrant and is colloquially known as a "blind pew"

    • References

    113 (number) Wikipedia
    (Text) CC BY-SA