Compare 642 vs 651
| Property | 642 | 651 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 3 | 3 |
| Total factors | 3 | 3 |
| Prime factorization | 21 × 31 × 1071 | 31 × 71 × 311 |
| Prime factorization | 2 × 3 × 107 | 3 × 7 × 31 |
| Divisors count | 8 | 8 |
| Divisors | 1, 2, 3, 6, 107, 214, 321, 642 | 1, 3, 7, 21, 31, 93, 217, 651 |
| Number of properties | 0 | 0 |
| Roman numberals | DCXLII | DCLI |
| Base 2 | 10100000102 | 10100010112 |
| Base 3 | 2122103 | 2200103 |
| Base 4 | 220024 | 220234 |
| Base 5 | 100325 | 101015 |
| Base 6 | 25506 | 30036 |
| Base 7 | 16057 | 16207 |
| Base 8 | 12028 | 12138 |
| Base 9 | 7839 | 8039 |
| Base 10 | 64210 | 65110 |
| Base 11 | 53411 | 54211 |
| Base 12 | 45612 | 46312 |
| Base 13 | 3a513 | 3b113 |
| Base 14 | 33c14 | 34714 |
| Base 15 | 2cc15 | 2d615 |
| Base 16 | 28216 | 28b16 |