Compare 638 vs 642
| Property | 638 | 642 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 3 | 3 |
| Total factors | 3 | 3 |
| Prime factorization | 21 × 111 × 291 | 21 × 31 × 1071 |
| Prime factorization | 2 × 11 × 29 | 2 × 3 × 107 |
| Divisors count | 8 | 8 |
| Divisors | 1, 2, 11, 22, 29, 58, 319, 638 | 1, 2, 3, 6, 107, 214, 321, 642 |
| Number of properties | 0 | 0 |
| Roman numberals | DCXXXVIII | DCXLII |
| Base 2 | 10011111102 | 10100000102 |
| Base 3 | 2121223 | 2122103 |
| Base 4 | 213324 | 220024 |
| Base 5 | 100235 | 100325 |
| Base 6 | 25426 | 25506 |
| Base 7 | 16017 | 16057 |
| Base 8 | 11768 | 12028 |
| Base 9 | 7789 | 7839 |
| Base 10 | 63810 | 64210 |
| Base 11 | 53011 | 53411 |
| Base 12 | 45212 | 45612 |
| Base 13 | 3a113 | 3a513 |
| Base 14 | 33814 | 33c14 |
| Base 15 | 2c815 | 2cc15 |
| Base 16 | 27e16 | 28216 |