11 (number)
11 (eleven) is the natural number following 10 and preceding 12. It is the first repdigit. In English, it is the smallest positive integer whose name has three syllables.
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| Cardinal | eleven | |||
| Ordinal | 11th (eleventh) | |||
| Numeral system | undecimal | |||
| Factorization | prime | |||
| Prime | 5th | |||
| Divisors | 1, 11 | |||
| Greek numeral | ΙΑ´ | |||
| Roman numeral | XI | |||
| Greek prefix | hendeca-/hendeka- | |||
| Latin prefix | undeca- | |||
| Binary | 10112 | |||
| Ternary | 1023 | |||
| Senary | 156 | |||
| Octal | 138 | |||
| Duodecimal | B12 | |||
| Hexadecimal | B16 | |||
| Bangla | ১১ | |||
| Hebrew numeral | י"א | |||
| Devanagari numerals | ११ | |||
| Malayalam | ൰൧ | |||
| Tamil numerals | கக | |||
| Telugu | ౧౧ | |||
| Babylonian numeral | 𒌋𒐕 | |||
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