Compare 21005 vs 21006
| Property | 21005 | 21006 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 3 |
| Total factors | 2 | 5 |
| Prime factorization | 51 × 42011 | 21 × 33 × 3891 |
| Prime factorization | 5 × 4201 | 2 × 3 × 3 × 3 × 389 |
| Divisors count | 4 | 16 |
| Divisors | 1, 5, 4201, 21005 | 1, 2, 3, 6, 9, 18, 27, 54, 389, 778, 1167, 2334, 3501, 7002, 10503, 21006 |
| Number of properties | 1 | 0 |
| Semiprimes | 5330th | |
| Roman numberals | ||
| Base 2 | 1010010000011012 | 1010010000011102 |
| Base 3 | 10012102223 | 10012110003 |
| Base 4 | 110200314 | 110200324 |
| Base 5 | 11330105 | 11330115 |
| Base 6 | 2411256 | 2411306 |
| Base 7 | 1151457 | 1151467 |
| Base 8 | 510158 | 510168 |
| Base 9 | 317289 | 317309 |
| Base 10 | 2100510 | 2100610 |
| Base 11 | 1486611 | 1486711 |
| Base 12 | 101a512 | 101a612 |
| Base 13 | 973a13 | 973b13 |
| Base 14 | 792514 | 792614 |
| Base 15 | 635515 | 635615 |
| Base 16 | 520d16 | 520e16 |