199 (number)
Encyclopedia : 1 : 19 : 199 : 199 (number)
199 is the natural number between 198 and 200. It is also a prime number.
| |||
| Ordinal | One hundred [and] ninety-nine | ||
| Cardinal | 199th | ||
| Factorization | prime number | ||
| Roman numeral | CXCIX | ||
| Binary | 11000111 | ||
| Hexadecimal | C7 | ||
In mathematics
- 199 is a prime number, a twin prime with 197.
- Coming at the end of a prime quadruplet, 199 sets a record low of the Mertens function, -8.
- 199 is the sum of three consecutive primes (61 + 67 + 71) as well as the sum of five consecutive primes (31 + 37 + 41 + 43 + 47).
- 199 is a Lucas number, a centered triangular number and a Chen prime.
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