Compare 491 vs 587
| Property | 491 | 587 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 4911 | 5871 |
| Prime factorization | 491 | 587 |
| Divisors count | 2 | 2 |
| Divisors | 1, 491 | 1, 587 |
| Number of properties | 7 | 8 |
| Chen primes | 66th | 77th |
| Cousin primes (2nd member) | 26th | |
| Good primes | 32nd | |
| Harmonic primes | 38th | |
| Isolated primes | 47th | 56th |
| Long primes | 34th | |
| Primes | 94th | 107th |
| Safe primes | 20th | |
| Sexy primes (1st member) | 52nd | |
| Sexy prime triplets (1st member) | 21st | |
| Sophie germain primes | 25th | |
| Super primes | 28th | |
| Roman numberals | CDXCI | DLXXXVII |
| Base 2 | 1111010112 | 10010010112 |
| Base 3 | 2000123 | 2102023 |
| Base 4 | 132234 | 210234 |
| Base 5 | 34315 | 43225 |
| Base 6 | 21356 | 24156 |
| Base 7 | 13017 | 14667 |
| Base 8 | 7538 | 11138 |
| Base 9 | 6059 | 7229 |
| Base 10 | 49110 | 58710 |
| Base 11 | 40711 | 49411 |
| Base 12 | 34b12 | 40b12 |
| Base 13 | 2ba13 | 36213 |
| Base 14 | 27114 | 2dd14 |
| Base 15 | 22b15 | 29215 |
| Base 16 | 1eb16 | 24b16 |