161 (number)
Encyclopedia : 1 : 16 : 161 : 161 (number)
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| Cardinal | one hundred and sixty-one | ||
| Ordinal | 161st (one hundred and sixty-first) | ||
| Factorization | [7 \cdot 23] | ||
| Divisors | 7, 23 | ||
| Roman numeral | CLXI | ||
| Binary | 10100001 | ||
| Hexadecimal | A1 | ||
161 is an odd natural number between 160 and 162. It is the sum of five consecutive prime numbers, namely 23, 29, 31, 37, and 41. 161 is also a Hexagonal pyramidal number.
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