91 (number)

← 90 91 92 →
Cardinalninety-one
Ordinal91st
(ninety-first)
Factorization7 × 13
Divisors1, 7, 13, 91
Greek numeralϞΑ´
Roman numeralXCI, xci
Binary10110112
Ternary101013
Senary2316
Octal1338
Duodecimal7712
Hexadecimal5B16

91 (ninety-one) is the natural number following 90 and preceding 92.

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