Compare 1666 vs 1668
| Property | 1666 | 1668 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 3 | 3 |
| Total factors | 4 | 4 |
| Prime factorization | 21 × 72 × 171 | 22 × 31 × 1391 |
| Prime factorization | 2 × 7 × 7 × 17 | 2 × 2 × 3 × 139 |
| Divisors count | 12 | 12 |
| Divisors | 1, 2, 7, 14, 17, 34, 49, 98, 119, 238, 833, 1666 | 1, 2, 3, 4, 6, 12, 139, 278, 417, 556, 834, 1668 |
| Number of properties | 0 | 0 |
| Roman numberals | MDCLXVI | MDCLXVIII |
| Base 2 | 110100000102 | 110100001002 |
| Base 3 | 20212013 | 20212103 |
| Base 4 | 1220024 | 1220104 |
| Base 5 | 231315 | 231335 |
| Base 6 | 114146 | 114206 |
| Base 7 | 46007 | 46027 |
| Base 8 | 32028 | 32048 |
| Base 9 | 22519 | 22539 |
| Base 10 | 166610 | 166810 |
| Base 11 | 128511 | 128711 |
| Base 12 | b6a12 | b7012 |
| Base 13 | 9b213 | 9b413 |
| Base 14 | 87014 | 87214 |
| Base 15 | 76115 | 76315 |
| Base 16 | 68216 | 68416 |