11 (number)

From Wikipedia, the free encyclopedia
Jump to: navigation, search
10 11 12
Cardinal eleven
Ordinal 11th
(eleventh)
Factorization prime
Prime 5th
Divisors 1, 11
Roman numeral XI
Greek prefix hendeca-/hendeka-
Latin prefix undeca-
Binary 10112
Ternary 1023
Quaternary 234
Quinary 215
Senary 156
Octal 138
Duodecimal B12
Hexadecimal B16
Vigesimal B20
Base 36 B36

11 (eleven Listeni/ɨˈlɛvɨn/ or /iˈlɛvɛn/) is a number. It comes between ten and twelve, is an odd number, and is a prime number, after 2, 3, 5, and 7.

In Roman numerals, 11 is written as XI.