Compare 397 vs 557
| Property | 397 | 557 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 3971 | 5571 |
| Prime factorization | 397 | 557 |
| Divisors count | 2 | 2 |
| Divisors | 1, 397 | 1, 557 |
| Number of properties | 8 | 9 |
| Additive primes | 45th | 55th |
| Chen primes | 72nd | |
| Cousin primes (1st member) | 22nd | |
| Cuban primes 1 | 8th | |
| Good primes | 29th | |
| Happy primes | 21st | |
| Harmonic primes | 43rd | |
| Isolated primes | 37th | 53rd |
| Left-truncatable primes | 31st | |
| Primes | 78th | 102nd |
| Pythagorean primes | 37th | 48th |
| Sexy primes (1st member) | 49th | |
| Sexy prime triplets (1st member) | 20th | |
| Roman numberals | CCCXCVII | DLVII |
| Base 2 | 1100011012 | 10001011012 |
| Base 3 | 1122013 | 2021223 |
| Base 4 | 120314 | 202314 |
| Base 5 | 30425 | 42125 |
| Base 6 | 15016 | 23256 |
| Base 7 | 11057 | 14247 |
| Base 8 | 6158 | 10558 |
| Base 9 | 4819 | 6789 |
| Base 10 | 39710 | 55710 |
| Base 11 | 33111 | 46711 |
| Base 12 | 29112 | 3a512 |
| Base 13 | 24713 | 33b13 |
| Base 14 | 20514 | 2bb14 |
| Base 15 | 1b715 | 27215 |
| Base 16 | 18d16 | 22d16 |