Compare 21391 vs 21937
| Property | 21391 | 21937 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 213911 | 219371 |
| Prime factorization | 21391 | 21937 |
| Divisors count | 2 | 2 |
| Divisors | 1, 21391 | 1, 21937 |
| Number of properties | 3 | 6 |
| Isolated primes | 1676th | 1716th |
| Long primes | 930th | |
| Primes | 2401st | 2459th |
| Pythagorean primes | 1220th | |
| Sexy primes (1st member) | 729th | 741st |
| Super primes | 364th | |
| Roman numberals | ||
| Base 2 | 1010011100011112 | 1010101101100012 |
| Base 3 | 10021000213 | 10100021113 |
| Base 4 | 110320334 | 111123014 |
| Base 5 | 11410315 | 12002225 |
| Base 6 | 2430116 | 2453216 |
| Base 7 | 1162367 | 1206467 |
| Base 8 | 516178 | 526618 |
| Base 9 | 323079 | 330749 |
| Base 10 | 2139110 | 2193710 |
| Base 11 | 1508711 | 1553311 |
| Base 12 | 1046712 | 1084112 |
| Base 13 | 997613 | 9ca613 |
| Base 14 | 7b1d14 | 7dcd14 |
| Base 15 | 651115 | 677715 |
| Base 16 | 538f16 | 55b116 |