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11 (number) Facts for Kids. Kiddle Encyclopedia.
11 (number) facts for kids
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| Cardinal | eleven | |||
| Ordinal | 11th (eleventh) |
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| 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 | |||
This article is about the number eleven. For the year, see 11.
11 (eleven 
i/ᵻˈlɛvᵻn/ 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.