Compare 21959 vs 21961
| Property | 21959 | 21961 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 71 × 31371 | 219611 |
| Prime factorization | 7 × 3137 | 21961 |
| Divisors count | 4 | 2 |
| Divisors | 1, 7, 3137, 21959 | 1, 21961 |
| Number of properties | 1 | 5 |
| Additive primes | 1139th | |
| Chen primes | 1206th | |
| Isolated primes | 1718th | |
| Primes | 2461st | |
| Pythagorean primes | 1221st | |
| Semiprimes | 5544th | |
| Roman numberals | ||
| Base 2 | 1010101110001112 | 1010101110010012 |
| Base 3 | 10100100223 | 10100101013 |
| Base 4 | 111130134 | 111130214 |
| Base 5 | 12003145 | 12003215 |
| Base 6 | 2453556 | 2454016 |
| Base 7 | 1210107 | 1210127 |
| Base 8 | 527078 | 527118 |
| Base 9 | 331089 | 331119 |
| Base 10 | 2195910 | 2196110 |
| Base 11 | 1555311 | 1555511 |
| Base 12 | 1085b12 | 1086112 |
| Base 13 | 9cc213 | 9cc413 |
| Base 14 | 800714 | 800914 |
| Base 15 | 678e15 | 679115 |
| Base 16 | 55c716 | 55c916 |