Compare 642 vs 646
| Property | 642 | 646 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 3 | 3 |
| Total factors | 3 | 3 |
| Prime factorization | 21 × 31 × 1071 | 21 × 171 × 191 |
| Prime factorization | 2 × 3 × 107 | 2 × 17 × 19 |
| Divisors count | 8 | 8 |
| Divisors | 1, 2, 3, 6, 107, 214, 321, 642 | 1, 2, 17, 19, 34, 38, 323, 646 |
| Number of properties | 0 | 0 |
| Roman numberals | DCXLII | DCXLVI |
| Base 2 | 10100000102 | 10100001102 |
| Base 3 | 2122103 | 2122213 |
| Base 4 | 220024 | 220124 |
| Base 5 | 100325 | 100415 |
| Base 6 | 25506 | 25546 |
| Base 7 | 16057 | 16127 |
| Base 8 | 12028 | 12068 |
| Base 9 | 7839 | 7879 |
| Base 10 | 64210 | 64610 |
| Base 11 | 53411 | 53811 |
| Base 12 | 45612 | 45a12 |
| Base 13 | 3a513 | 3a913 |
| Base 14 | 33c14 | 34214 |
| Base 15 | 2cc15 | 2d115 |
| Base 16 | 28216 | 28616 |