139 (number)
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|---|---|---|---|---|
| Cardinal | one hundred thirty-nine | |||
| Ordinal | 139th (one hundred and thirty-ninth) |
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| Factorization | prime | |||
| Prime | 34th | |||
| Divisors | 1, 139 | |||
| Roman numeral | CXXXIX | |||
| Binary | 100010112 | |||
| Ternary | 120113 | |||
| Quaternary | 20234 | |||
| Quinary | 10245 | |||
| Senary | 3516 | |||
| Octal | 2138 | |||
| Duodecimal | B712 | |||
| Hexadecimal | 8B16 | |||
| Vigesimal | 6J20 | |||
| Base 36 | 3V36 | |||
139 (One hundred [and] thirty-nine) is the natural number following 138 and preceding 140.
139 is the 34th prime number. 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.
This number is the sum of five consecutive prime numbers (19 + 23 + 29 + 31 + 37).
It is the smallest factor of 64079. It is also the smallest factor of the first nine terms of the Euclid–Mullin sequence, making it the tenth term.
139 is a happy number and a strictly non-palindromic number.
139 is also:
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