Compare 21981 vs 21992
| Property | 21981 | 21992 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 3 | 2 |
| Total factors | 3 | 4 |
| Prime factorization | 31 × 171 × 4311 | 23 × 27491 |
| Prime factorization | 3 × 17 × 431 | 2 × 2 × 2 × 2749 |
| Divisors count | 8 | 8 |
| Divisors | 1, 3, 17, 51, 431, 1293, 7327, 21981 | 1, 2, 4, 8, 2749, 5498, 10996, 21992 |
| Number of properties | 0 | 0 |
| Roman numberals | ||
| Base 2 | 1010101110111012 | 1010101111010002 |
| Base 3 | 10100110103 | 10100111123 |
| Base 4 | 111131314 | 111132204 |
| Base 5 | 12004115 | 12004325 |
| Base 6 | 2454336 | 2454526 |
| Base 7 | 1210417 | 1210557 |
| Base 8 | 527358 | 527508 |
| Base 9 | 331339 | 331459 |
| Base 10 | 2198110 | 2199210 |
| Base 11 | 1557311 | 1558311 |
| Base 12 | 1087912 | 1088812 |
| Base 13 | a00b13 | a01913 |
| Base 14 | 802114 | 802c14 |
| Base 15 | 67a615 | 67b215 |
| Base 16 | 55dd16 | 55e816 |