| ||||
|---|---|---|---|---|
| Cardinal | two hundred sixty-one | |||
| Ordinal | 261st (two hundred sixty-first) | |||
| Factorization | 32 × 29 | |||
| Divisors | 1, 3, 9, 29, 87, 261 | |||
| Greek numeral | ΣΞΑ´ | |||
| Roman numeral | CCLXI | |||
| Binary | 1000001012 | |||
| Ternary | 1002003 | |||
| Senary | 11136 | |||
| Octal | 4058 | |||
| Duodecimal | 19912 | |||
| Hexadecimal | 10516 | |||
261 (two hundred [and] sixty-one) is the natural number following 260 and preceding 262. It has the prime factorization 32·29.