Compare 1597 vs 1987
| Property | 1597 | 1987 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 15971 | 19871 |
| Prime factorization | 1597 | 1987 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1597 | 1, 1987 |
| Number of properties | 9 | 6 |
| Cousin primes (1st member) | 57th | |
| Emirps | 77th | |
| Fibonacci primes | 7th | |
| Good primes | 56th | 62nd |
| Isolated primes | 152nd | 181st |
| Lucky primes | 61st | 70th |
| Primes | 251st | 300th |
| Pythagorean primes | 119th | |
| Sexy primes (1st member) | 127th | |
| Sexy prime triplets (1st member) | 50th | |
| Super primes | 54th | |
| Roman numberals | MDXCVII | MCMLXXXVII |
| Base 2 | 110001111012 | 111110000112 |
| Base 3 | 20120113 | 22011213 |
| Base 4 | 1203314 | 1330034 |
| Base 5 | 223425 | 304225 |
| Base 6 | 112216 | 131116 |
| Base 7 | 44417 | 55367 |
| Base 8 | 30758 | 37038 |
| Base 9 | 21649 | 26479 |
| Base 10 | 159710 | 198710 |
| Base 11 | 122211 | 154711 |
| Base 12 | b1112 | 119712 |
| Base 13 | 95b13 | b9b13 |
| Base 14 | 82114 | a1d14 |
| Base 15 | 71715 | 8c715 |
| Base 16 | 63d16 | 7c316 |