881 (number)

← 880 881 882 →
Cardinaleight hundred eighty-one
Ordinal881st
(eight hundred eighty-first)
Factorizationprime
Greek numeralΩΠΑ´
Roman numeralDCCCLXXXI
Binary11011100012
Ternary10121223
Quaternary313014
Quinary120115
Senary40256
Octal15618
Duodecimal61512
Hexadecimal37116
Vigesimal24120
Base 36OH36

881 is the natural number that comes after 880 and before 882. It is an odd number, and a prime number.

In mathematics

881 is a twin prime, a Chen prime, a happy prime, an Eisenstein prime with no imaginary part, and the sum of nine consecutive primes (79 + 83 + 89 + 97 + 101 + 103 + 107 + 109 + 113).

References

  1. 1 2 Vanovschi, Vitalii. "Properties of the number 881". www.numberempire.com. Retrieved 2026-09-27.
  2. ↑ Weisstein, Eric W. "Chen Prime". mathworld.wolfram.com. Wolfram Research, Inc. Retrieved 2026-09-27.
  3. ↑ "Number 881 - Happy Number, Properties & Facts | NumberWorld". numberworld.info. Retrieved 2026-09-27.
  4. ↑ Weisstein, Eric W. "Happy Number". mathworld.wolfram.com. Wolfram Research, Inc. Retrieved 2026-09-27.
  5. ↑ Sloane, N. J. A. (ed.). "Sequence A003627 (Primes of the form 3n-1)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  6. ↑ Sloane, N. J. A. (ed.). "Sequence A082251 (Primes that are the sum of 9 consecutive primes)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.