318 (number)

318 is the natural number following 317 and preceding 319.

← 317 318 319 →
Cardinalthree hundred eighteen
Ordinal318th
(three hundred eighteenth)
Factorization2 × 3 × 53
Greek numeralΤΙΗ´
Roman numeralCCCXVIII
Binary1001111102
Ternary1022103
Senary12506
Octal4768
Duodecimal22612
Hexadecimal13E16

In mathematics

318 is:

  • a sphenic number
  • a nontotient[1]
  • the number of posets with 6 unlabeled elements[2]
  • the sum of 12 consecutive primes, 7 + 11 + 13 + 17 + 19 + 23 + 29 + 31 + 37 + 41 + 43 + 47.

References
  1. "Sloane's A005277 : Nontotients". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-02.
  2. Sloane, N. J. A. (ed.). "Sequence A000112 (Number of partially ordered sets (posets) with n unlabeled elements)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
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