Compare 21521 vs 21528
| Property | 21521 | 21528 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 4 |
| Total factors | 1 | 7 |
| Prime factorization | 215211 | 23 × 32 × 131 × 231 |
| Prime factorization | 21521 | 2 × 2 × 2 × 3 × 3 × 13 × 23 |
| Divisors count | 2 | 48 |
| Divisors | 1, 21521 | 1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 23, 24, 26, 36, 39, 46, 52, 69, 72, 78, 92, 104, 117, 138, 156, 184, 207, 234, 276, 299, 312, 414, 468, 552, 598, 828, 897, 936, 1196, 1656, 1794, 2392, 2691, 3588, 5382, 7176, 10764, 21528 |
| Number of properties | 7 | 0 |
| Additive primes | 1119th | |
| Chen primes | 1184th | |
| Cousin primes (2nd member) | 368th | |
| Primes | 2415th | |
| Prime triplets (2nd member) | 183rd | |
| Pythagorean primes | 1197th | |
| Twin primes (1st member) | 365th | |
| Roman numberals | ||
| Base 2 | 1010100000100012 | 1010100000110002 |
| Base 3 | 10021120023 | 10021121003 |
| Base 4 | 111001014 | 111001204 |
| Base 5 | 11420415 | 11421035 |
| Base 6 | 2433456 | 2434006 |
| Base 7 | 1165137 | 1165237 |
| Base 8 | 520218 | 520308 |
| Base 9 | 324629 | 324709 |
| Base 10 | 2152110 | 2152810 |
| Base 11 | 1519511 | 151a111 |
| Base 12 | 1055512 | 1056012 |
| Base 13 | 9a4613 | 9a5013 |
| Base 14 | 7bb314 | 7bba14 |
| Base 15 | 659b15 | 65a315 |
| Base 16 | 541116 | 541816 |