Compare 21881 vs 21961
| Property | 21881 | 21961 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 218811 | 219611 |
| Prime factorization | 21881 | 21961 |
| Divisors count | 2 | 2 |
| Divisors | 1, 21881 | 1, 21961 |
| Number of properties | 4 | 5 |
| Additive primes | 1139th | |
| Chen primes | 1204th | 1206th |
| Isolated primes | 1712th | 1718th |
| Primes | 2455th | 2461st |
| Pythagorean primes | 1217th | 1221st |
| Roman numberals | ||
| Base 2 | 1010101011110012 | 1010101110010012 |
| Base 3 | 10100001023 | 10100101013 |
| Base 4 | 111113214 | 111130214 |
| Base 5 | 12000115 | 12003215 |
| Base 6 | 2451456 | 2454016 |
| Base 7 | 1205367 | 1210127 |
| Base 8 | 525718 | 527118 |
| Base 9 | 330129 | 331119 |
| Base 10 | 2188110 | 2196110 |
| Base 11 | 1549211 | 1555511 |
| Base 12 | 107b512 | 1086112 |
| Base 13 | 9c6213 | 9cc413 |
| Base 14 | 7d8d14 | 800914 |
| Base 15 | 673b15 | 679115 |
| Base 16 | 557916 | 55c916 |