Compare 557 vs 691
| Property | 557 | 691 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 5571 | 6911 |
| Prime factorization | 557 | 691 |
| Divisors count | 2 | 2 |
| Divisors | 1, 557 | 1, 691 |
| Number of properties | 9 | 3 |
| Additive primes | 55th | |
| Chen primes | 72nd | |
| Good primes | 29th | |
| Harmonic primes | 43rd | 50th |
| Isolated primes | 53rd | 66th |
| Primes | 102nd | 125th |
| Pythagorean primes | 48th | |
| Sexy primes (1st member) | 49th | |
| Sexy prime triplets (1st member) | 20th | |
| Roman numberals | DLVII | DCXCI |
| Base 2 | 10001011012 | 10101100112 |
| Base 3 | 2021223 | 2211213 |
| Base 4 | 202314 | 223034 |
| Base 5 | 42125 | 102315 |
| Base 6 | 23256 | 31116 |
| Base 7 | 14247 | 20057 |
| Base 8 | 10558 | 12638 |
| Base 9 | 6789 | 8479 |
| Base 10 | 55710 | 69110 |
| Base 11 | 46711 | 57911 |
| Base 12 | 3a512 | 49712 |
| Base 13 | 33b13 | 41213 |
| Base 14 | 2bb14 | 37514 |
| Base 15 | 27215 | 31115 |
| Base 16 | 22d16 | 2b316 |