Compare 1664 vs 1665
| Property | 1664 | 1665 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 2 | 3 |
| Total factors | 8 | 4 |
| Prime factorization | 27 × 131 | 32 × 51 × 371 |
| Prime factorization | 2 × 2 × 2 × 2 × 2 × 2 × 2 × 13 | 3 × 3 × 5 × 37 |
| Divisors count | 16 | 12 |
| Divisors | 1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 208, 416, 832, 1664 | 1, 3, 5, 9, 15, 37, 45, 111, 185, 333, 555, 1665 |
| Number of properties | 0 | 0 |
| Roman numberals | MDCLXIV | MDCLXV |
| Base 2 | 110100000002 | 110100000012 |
| Base 3 | 20211223 | 20212003 |
| Base 4 | 1220004 | 1220014 |
| Base 5 | 231245 | 231305 |
| Base 6 | 114126 | 114136 |
| Base 7 | 45657 | 45667 |
| Base 8 | 32008 | 32018 |
| Base 9 | 22489 | 22509 |
| Base 10 | 166410 | 166510 |
| Base 11 | 128311 | 128411 |
| Base 12 | b6812 | b6912 |
| Base 13 | 9b013 | 9b113 |
| Base 14 | 86c14 | 86d14 |
| Base 15 | 75e15 | 76015 |
| Base 16 | 68016 | 68116 |