Compare 21996 vs 21997
| Property | 21996 | 21997 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 4 | 1 |
| Total factors | 6 | 1 |
| Prime factorization | 22 × 32 × 131 × 471 | 219971 |
| Prime factorization | 2 × 2 × 3 × 3 × 13 × 47 | 21997 |
| Divisors count | 36 | 2 |
| Divisors | 1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 47, 52, 78, 94, 117, 141, 156, 188, 234, 282, 423, 468, 564, 611, 846, 1222, 1692, 1833, 2444, 3666, 5499, 7332, 10998, 21996 | 1, 21997 |
| Number of properties | 0 | 8 |
| Chen primes | 1209th | |
| Isolated primes | 1721st | |
| Left-truncatable primes | 173rd | |
| Primes | 2464th | |
| Pythagorean primes | 1223rd | |
| Sexy primes (1st member) | 743rd | |
| Sexy primes (2nd member) | 742nd | |
| Sexy prime triplets (2nd member) | 202nd | |
| Roman numberals | ||
| Base 2 | 1010101111011002 | 1010101111011012 |
| Base 3 | 10100112003 | 10100112013 |
| Base 4 | 111132304 | 111132314 |
| Base 5 | 12004415 | 12004425 |
| Base 6 | 2455006 | 2455016 |
| Base 7 | 1210627 | 1210637 |
| Base 8 | 527548 | 527558 |
| Base 9 | 331509 | 331519 |
| Base 10 | 2199610 | 2199710 |
| Base 11 | 1558711 | 1558811 |
| Base 12 | 1089012 | 1089112 |
| Base 13 | a02013 | a02113 |
| Base 14 | 803214 | 803314 |
| Base 15 | 67b615 | 67b715 |
| Base 16 | 55ec16 | 55ed16 |