11 (number)
11 (eleven /ɪˈlɛvən/ (
listen) or /iˈlɛvən/) is a number. It comes between ten and twelve, is an odd number, and is the 5th prime number, after 2, 3, 5, and 7.
| ||||
|---|---|---|---|---|
| Cardinal | eleven, 'leven, oneteen, enteen | |||
| Ordinal | 11th (eleventh, 'leventh, oneteenth, enteenth) | |||
| 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 | |||
| Hebrew numeral | יא | |||
In Roman numerals 11 is written as XI.
11 (number) Media
Copper engraving of a hendecagon, by Anton Ernst Burkhard von Birckenstein (1698)
