Compare 1664 vs 1666
| Property | 1664 | 1666 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 2 | 3 |
| Total factors | 8 | 4 |
| Prime factorization | 27 × 131 | 21 × 72 × 171 |
| Prime factorization | 2 × 2 × 2 × 2 × 2 × 2 × 2 × 13 | 2 × 7 × 7 × 17 |
| Divisors count | 16 | 12 |
| Divisors | 1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 208, 416, 832, 1664 | 1, 2, 7, 14, 17, 34, 49, 98, 119, 238, 833, 1666 |
| Number of properties | 0 | 0 |
| Roman numberals | MDCLXIV | MDCLXVI |
| Base 2 | 110100000002 | 110100000102 |
| Base 3 | 20211223 | 20212013 |
| Base 4 | 1220004 | 1220024 |
| Base 5 | 231245 | 231315 |
| Base 6 | 114126 | 114146 |
| Base 7 | 45657 | 46007 |
| Base 8 | 32008 | 32028 |
| Base 9 | 22489 | 22519 |
| Base 10 | 166410 | 166610 |
| Base 11 | 128311 | 128511 |
| Base 12 | b6812 | b6a12 |
| Base 13 | 9b013 | 9b213 |
| Base 14 | 86c14 | 87014 |
| Base 15 | 75e15 | 76115 |
| Base 16 | 68016 | 68216 |