Compare 139 vs 397
| Property | 139 | 397 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 1391 | 3971 |
| Prime factorization | 139 | 397 |
| Divisors count | 2 | 2 |
| Divisors | 1, 139 | 1, 397 |
| Number of properties | 6 | 8 |
| Additive primes | 19th | 45th |
| Chen primes | 28th | |
| Cousin primes (1st member) | 22nd | |
| Cuban primes 1 | 8th | |
| Happy primes | 10th | 21st |
| Harmonic primes | 11th | |
| Isolated primes | 37th | |
| Left-truncatable primes | 31st | |
| Primes | 34th | 78th |
| Pythagorean primes | 37th | |
| Twin primes (2nd member) | 11th | |
| Roman numberals | CXXXIX | CCCXCVII |
| Base 2 | 100010112 | 1100011012 |
| Base 3 | 120113 | 1122013 |
| Base 4 | 20234 | 120314 |
| Base 5 | 10245 | 30425 |
| Base 6 | 3516 | 15016 |
| Base 7 | 2567 | 11057 |
| Base 8 | 2138 | 6158 |
| Base 9 | 1649 | 4819 |
| Base 10 | 13910 | 39710 |
| Base 11 | 11711 | 33111 |
| Base 12 | b712 | 29112 |
| Base 13 | a913 | 24713 |
| Base 14 | 9d14 | 20514 |
| Base 15 | 9415 | 1b715 |
| Base 16 | 8b16 | 18d16 |