139 (number)
From Wikipedia, the free encyclopedia
| Cardinal | 139 One hundred [and] thirty-nine. |
| Ordinal | 139th One hundred [and] thirty-ninth. |
| Factorization | prime |
| Divisors | 1, 139 |
| Roman numeral | CXXXIX |
| Binary | 10001011 |
| Octal | 213 |
| Hexadecimal | 8B |
139 (One hundred [and] thirty-nine) is the natural number following 138 and preceding 140.
[edit] In mathematics
One hundred [and] thirty-nine is the 34th prime number, so it is divisible only by itself and 1. It is a twin prime with 137. Because 141 is a semiprime, 139 is a Chen prime. 139 is the smallest prime before a prime gap of length 10.[1]
This number is the sum of five consecutive prime numbers (19 + 23 + 29 + 31 + 37).
It is the smallest factor of 64079, the smallest composite Lucas number with a prime index. It is also the smallest factor of the first nine terms of the Euclid-Mullin sequence, making it the tenth term.
139 is a strictly non-palindromic number.
[edit] In other fields
One hundred [and] thirty-nine is also:
- The year AD 139 or 139 BC.
- A popular motel room at the Fiesta Motel in Panama City Beach, Florida during the 2000 Spring Break and summer seasons.
[edit] References
- ^ Wells, D. The Penguin Dictionary of Curious and Interesting Numbers London: Penguin Group. (1987): 139
