Compare 21154 vs 21157
| Property | 21154 | 21157 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 21 × 71 × 15111 | 211571 |
| Prime factorization | 2 × 7 × 1511 | 21157 |
| Divisors count | 8 | 2 |
| Divisors | 1, 2, 7, 14, 1511, 3022, 10577, 21154 | 1, 21157 |
| Number of properties | 0 | 5 |
| Isolated primes | 1659th | |
| Primes | 2378th | |
| Pythagorean primes | 1181st | |
| Sexy primes (1st member) | 720th | |
| Sexy prime triplets (1st member) | 197th | |
| Roman numberals | ||
| Base 2 | 1010010101000102 | 1010010101001012 |
| Base 3 | 10020001113 | 10020001213 |
| Base 4 | 110222024 | 110222114 |
| Base 5 | 11341045 | 11341125 |
| Base 6 | 2415346 | 2415416 |
| Base 7 | 1154507 | 1154537 |
| Base 8 | 512428 | 512458 |
| Base 9 | 320149 | 320179 |
| Base 10 | 2115410 | 2115710 |
| Base 11 | 1499111 | 1499411 |
| Base 12 | 102aa12 | 102b112 |
| Base 13 | 982313 | 982613 |
| Base 14 | 79d014 | 79d314 |
| Base 15 | 640415 | 640715 |
| Base 16 | 52a216 | 52a516 |