Compare 21391 vs 21517
| Property | 21391 | 21517 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 213911 | 215171 |
| Prime factorization | 21391 | 21517 |
| Divisors count | 2 | 2 |
| Divisors | 1, 21391 | 1, 21517 |
| Number of properties | 3 | 7 |
| Cousin primes (1st member) | 368th | |
| Isolated primes | 1676th | 1687th |
| Primes | 2401st | 2414th |
| Prime triplets (1st member) | 183rd | |
| Pythagorean primes | 1196th | |
| Sexy primes (1st member) | 729th | 734th |
| Sexy prime triplets (1st member) | 200th | |
| Roman numberals | ||
| Base 2 | 1010011100011112 | 1010100000011012 |
| Base 3 | 10021000213 | 10021112213 |
| Base 4 | 110320334 | 111000314 |
| Base 5 | 11410315 | 11420325 |
| Base 6 | 2430116 | 2433416 |
| Base 7 | 1162367 | 1165067 |
| Base 8 | 516178 | 520158 |
| Base 9 | 323079 | 324579 |
| Base 10 | 2139110 | 2151710 |
| Base 11 | 1508711 | 1519111 |
| Base 12 | 1046712 | 1055112 |
| Base 13 | 997613 | 9a4213 |
| Base 14 | 7b1d14 | 7bad14 |
| Base 15 | 651115 | 659715 |
| Base 16 | 538f16 | 540d16 |