139 (number)
From Wikipedia, the free encyclopedia
139 (One hundred [and] thirty-nine) is the natural number following 138 and preceding 140. In mathematicsOne 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. In other fieldsOne hundred [and] thirty-nine is also: References
| |||||||||||||||||||
