Compare 21680 vs 21691
| Property | 21680 | 21691 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 3 | 2 |
| Total factors | 6 | 2 |
| Prime factorization | 24 × 51 × 2711 | 1091 × 1991 |
| Prime factorization | 2 × 2 × 2 × 2 × 5 × 271 | 109 × 199 |
| Divisors count | 20 | 4 |
| Divisors | 1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 271, 542, 1084, 1355, 2168, 2710, 4336, 5420, 10840, 21680 | 1, 109, 199, 21691 |
| Number of properties | 0 | 1 |
| Semiprimes | 5480th | |
| Roman numberals | ||
| Base 2 | 1010100101100002 | 1010100101110112 |
| Base 3 | 10022012223 | 10022021013 |
| Base 4 | 111023004 | 111023234 |
| Base 5 | 11432105 | 11432315 |
| Base 6 | 2442126 | 2442316 |
| Base 7 | 1201317 | 1201457 |
| Base 8 | 522608 | 522738 |
| Base 9 | 326589 | 326719 |
| Base 10 | 2168010 | 2169110 |
| Base 11 | 1531a11 | 1532a11 |
| Base 12 | 1066812 | 1067712 |
| Base 13 | 9b3913 | 9b4713 |
| Base 14 | 7c8814 | 7c9514 |
| Base 15 | 665515 | 666115 |
| Base 16 | 54b016 | 54bb16 |