Compare 139 vs 157
| Property | 139 | 157 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 1391 | 1571 |
| Prime factorization | 139 | 157 |
| Divisors count | 2 | 2 |
| Divisors | 1, 139 | 1, 157 |
| Number of properties | 6 | 11 |
| Additive primes | 19th | 21st |
| Chen primes | 28th | 30th |
| Emirps | 12th | |
| Happy primes | 10th | |
| Harmonic primes | 11th | 13th |
| Isolated primes | 14th | |
| Primes | 34th | 37th |
| Pythagorean primes | 17th | |
| Sexy primes (1st member) | 22nd | |
| Sexy primes (2nd member) | 21st | |
| Sexy prime triplets (2nd member) | 12th | |
| Super primes | 12th | |
| Twin primes (2nd member) | 11th | |
| Roman numberals | CXXXIX | CLVII |
| Base 2 | 100010112 | 100111012 |
| Base 3 | 120113 | 122113 |
| Base 4 | 20234 | 21314 |
| Base 5 | 10245 | 11125 |
| Base 6 | 3516 | 4216 |
| Base 7 | 2567 | 3137 |
| Base 8 | 2138 | 2358 |
| Base 9 | 1649 | 1849 |
| Base 10 | 13910 | 15710 |
| Base 11 | 11711 | 13311 |
| Base 12 | b712 | 11112 |
| Base 13 | a913 | c113 |
| Base 14 | 9d14 | b314 |
| Base 15 | 9415 | a715 |
| Base 16 | 8b16 | 9d16 |