165 (number)

165 (one hundred sixty-five) is a whole number. It comes after 164 and before 166.

← 164 165 166 →
Cardinalone hundred sixty-five
Ordinal165th
(one hundred sixty-fifth)
Factorization3 × 5 × 11
Divisors1, 3, 5, 11, 15, 33, 55, 165
Greek numeralΡΞΕ´
Roman numeralCLXV
Binary101001012
Ternary200103
Quaternary22114
Quinary11305
Senary4336
Octal2458
Duodecimal11912
HexadecimalA516
Vigesimal8520
Base 364L36

In mathematics

  • 165 is a composite number. Its factors include 3, 5, and 11. 165 = 3 × 5 × 11.
  • 165 is also a binomial coefficient. It is the number of ways to choose 3 objects from 11 (written as “11 choose 3”).
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