Compare 21157 vs 21391
| Property | 21157 | 21391 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 211571 | 213911 |
| Prime factorization | 21157 | 21391 |
| Divisors count | 2 | 2 |
| Divisors | 1, 21157 | 1, 21391 |
| Number of properties | 5 | 3 |
| Isolated primes | 1659th | 1676th |
| Primes | 2378th | 2401st |
| Pythagorean primes | 1181st | |
| Sexy primes (1st member) | 720th | 729th |
| Sexy prime triplets (1st member) | 197th | |
| Roman numberals | ||
| Base 2 | 1010010101001012 | 1010011100011112 |
| Base 3 | 10020001213 | 10021000213 |
| Base 4 | 110222114 | 110320334 |
| Base 5 | 11341125 | 11410315 |
| Base 6 | 2415416 | 2430116 |
| Base 7 | 1154537 | 1162367 |
| Base 8 | 512458 | 516178 |
| Base 9 | 320179 | 323079 |
| Base 10 | 2115710 | 2139110 |
| Base 11 | 1499411 | 1508711 |
| Base 12 | 102b112 | 1046712 |
| Base 13 | 982613 | 997613 |
| Base 14 | 79d314 | 7b1d14 |
| Base 15 | 640715 | 651115 |
| Base 16 | 52a516 | 538f16 |