17 (number)
natural number / From Wikipedia, the free encyclopedia
This article is about the number seventeen. For the year, see 17.
17 (seventeen) is a number. It comes between sixteen and eighteen, and is an odd number. It is also the 7th prime number, after 2, 3, 5, 7, 11, and 13. In ordinal, It is 17th (seventeenth). In Italy, 17 is considered an unlucky number.
Quick Facts ← 16 17 18 →, Cardinal ...
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Cardinal | seventeen | |||
Ordinal | 17th (seventeenth) | |||
Numeral system | septendecimal | |||
Factorization | prime | |||
Prime | 7th | |||
Divisors | 1, 17 | |||
Greek numeral | ΙΖ´ | |||
Roman numeral | XVII | |||
Binary | 100012 | |||
Ternary | 1223 | |||
Quaternary | 1014 | |||
Quinary | 325 | |||
Senary | 256 | |||
Octal | 218 | |||
Duodecimal | 1512 | |||
Hexadecimal | 1116 | |||
Vigesimal | H20 | |||
Base 36 | H36 |
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In Roman numerals, 17 is written as XVII.