91 (number)
91 (ninety-one) is the natural number following 90 and preceding 92.
Look up ninety-one in Wiktionary, the free dictionary.
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| Cardinal | ninety-one | |||
| Ordinal | 91st (ninety-first) | |||
| Factorization | 7 × 13 | |||
| Divisors | 1, 7, 13, 91 | |||
| Greek numeral | ϞΑ´ | |||
| Roman numeral | XCI | |||
| Binary | 10110112 | |||
| Ternary | 101013 | |||
| Senary | 2316 | |||
| Octal | 1338 | |||
| Duodecimal | 7712 | |||
| Hexadecimal | 5B16 | |||
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