213 (number)

From Wikipedia, the free encyclopedia
← 212 213 214 →
List of numbersIntegers
0 100 200 300 400 500 600 700 800 900
Cardinaltwo hundred thirteen
Ordinal213th
(two hundred thirteenth)
Factorization3 × 71
Divisors1, 3, 71, 213
Greek numeralΣΙΓ´
Roman numeralCCXIII
Binary110101012
Ternary212203
Octal3258
Duodecimal15912
HexadecimalD516

213 (two hundred [and] thirteen) is the number following 212 and preceding 214.

It is the smallest of a triple consecutive numbers that are products of two distinct prime numbers: 213 = 3 × 71, 214 = 2 × 107, and 215 = 5 × 43.[1] Its square is a sum of distinct factorials: 2132 = 45369 = 1! + 2! + 3! + 7! + 8!.[2]

See also[]

  • 213, a hip hop music group
  • Area code 213
  • 213 Lilaea a main belt asteroid.
  • +213 is the code for international direct-dial phone calls to Algeria.

References[]

  1. ^ Sloane, N. J. A. (ed.). "Sequence A039833 (Smallest of three consecutive squarefree numbers n, n+1, n+2 of the form p*q where p and q are primes)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation..
  2. ^ Sloane, N. J. A. (ed.). "Sequence A014597 (Numbers n such that n^2 is a sum of distinct factorials)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation..
Retrieved from ""