253 (number)

Last updated
252 253 254
Cardinal two hundred fifty-three
Ordinal 253rd
(two hundred fifty-third)
Factorization 11 × 23
Divisors 1, 11, 23, 253
Greek numeral ΣΝΓ´
Roman numeral CCLIII
Binary 111111012
Ternary 1001013
Senary 11016
Octal 3758
Duodecimal 19112
Hexadecimal FD16

253 (two hundred [and] fifty-three) is the natural number following 252 and preceding 254.

In mathematics

253 is:

is a prime number. Its decimal expansion is 252 nines, an eight, and 253 more nines.

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References

  1. Sloane, N. J. A. (ed.). "SequenceA000217(triangular numbers)". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
  2. Sloane, N. J. A. (ed.). "SequenceA003154(Centered 12-gonal numbers. Also star numbers: 6*n*(n-1) + 1)". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
  3. Sloane, N. J. A. (ed.). "SequenceA069099(Centered heptagonal numbers. a(n) = (7*n^2 - 7*n + 2)/2)". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
  4. Sloane, N. J. A. (ed.). "SequenceA060544(Centered 9-gonal numbers. (3n-1)*(3n-2)/2)". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
  5. Sloane, N. J. A. (ed.). "SequenceA016105(Blum integers: numbers of the form p * q where p and q are distinct primes congruent to 3 (mod 4))". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation.