23 (number)

This article is about the number 23. For the year, see 23.
← 22 23 24 →
Cardinaltwenty-three
Ordinal23rd
(twenty-third)
Factorizationprime
Greek numeralΚΓ´
Roman numeralXXIII
Binary101112
Ternary2123
Quaternary1134
Quinary435
Senary356
Octal278
Duodecimal1B12
Hexadecimal1716
Vigesimal1320
Base 36N36

23 (twenty-three) is a natural number. It comes between twenty-two and twenty-four, and is an odd number. It is also the 9th prime number, after 2, 3, 5, 7, 11, 13, 17, and 19.

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