253 (number)
Natural number
From Wikipedia, the free encyclopedia
253 (two hundred [and] fifty-three) is the natural number following 252 and preceding 254.
Cardinaltwo hundred fifty-three
Ordinal253rd
(two hundred fifty-third)
(two hundred fifty-third)
Factorization11 × 23
Divisors1, 11, 23, 253
| ||||
|---|---|---|---|---|
| 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, ccliii | |||
| Binary | 111111012 | |||
| Ternary | 1001013 | |||
| Senary | 11016 | |||
| Octal | 3758 | |||
| Duodecimal | 19112 | |||
| Hexadecimal | FD16 | |||
In mathematics
253 is:
- a semiprime since it is the product of 2 primes.
- a brilliant number, meaning that its prime factors have the same amount of digits[1]
- the 22nd triangular number.[2]
- a star number.[3]
- a centered heptagonal number.[4]
- a centered nonagonal number.[5]
- a Blum integer.[6]
- a member of the 13-aliquot tree.
