Compare 1645 vs 1647
| Property | 1645 | 1647 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 3 | 2 |
| Total factors | 3 | 4 |
| Prime factorization | 51 × 71 × 471 | 33 × 611 |
| Prime factorization | 5 × 7 × 47 | 3 × 3 × 3 × 61 |
| Divisors count | 8 | 8 |
| Divisors | 1, 5, 7, 35, 47, 235, 329, 1645 | 1, 3, 9, 27, 61, 183, 549, 1647 |
| Number of properties | 0 | 0 |
| Roman numberals | MDCXLV | MDCXLVII |
| Base 2 | 110011011012 | 110011011112 |
| Base 3 | 20202213 | 20210003 |
| Base 4 | 1212314 | 1212334 |
| Base 5 | 230405 | 230425 |
| Base 6 | 113416 | 113436 |
| Base 7 | 45407 | 45427 |
| Base 8 | 31558 | 31578 |
| Base 9 | 22279 | 22309 |
| Base 10 | 164510 | 164710 |
| Base 11 | 126611 | 126811 |
| Base 12 | b5112 | b5312 |
| Base 13 | 99713 | 99913 |
| Base 14 | 85714 | 85914 |
| Base 15 | 74a15 | 74c15 |
| Base 16 | 66d16 | 66f16 |