Compare 21957 vs 21961
| Property | 21957 | 21961 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 31 × 131 × 5631 | 219611 |
| Prime factorization | 3 × 13 × 563 | 21961 |
| Divisors count | 8 | 2 |
| Divisors | 1, 3, 13, 39, 563, 1689, 7319, 21957 | 1, 21961 |
| Number of properties | 0 | 5 |
| Additive primes | 1139th | |
| Chen primes | 1206th | |
| Isolated primes | 1718th | |
| Primes | 2461st | |
| Pythagorean primes | 1221st | |
| Roman numberals | ||
| Base 2 | 1010101110001012 | 1010101110010012 |
| Base 3 | 10100100203 | 10100101013 |
| Base 4 | 111130114 | 111130214 |
| Base 5 | 12003125 | 12003215 |
| Base 6 | 2453536 | 2454016 |
| Base 7 | 1210057 | 1210127 |
| Base 8 | 527058 | 527118 |
| Base 9 | 331069 | 331119 |
| Base 10 | 2195710 | 2196110 |
| Base 11 | 1555111 | 1555511 |
| Base 12 | 1085912 | 1086112 |
| Base 13 | 9cc013 | 9cc413 |
| Base 14 | 800514 | 800914 |
| Base 15 | 678c15 | 679115 |
| Base 16 | 55c516 | 55c916 |