Compare 639637 vs 639638
| Property | 639637 | 639638 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 6396371 | 21 × 3198191 |
| Prime factorization | 639637 | 2 × 319819 |
| Divisors count | 2 | 4 |
| Divisors | 1, 639637 | 1, 2, 319819, 639638 |
| Number of properties | 3 | 1 |
| Isolated primes | 40793rd | |
| Primes | 52048th | |
| Semiprimes | 137063rd | |
| Sexy primes (2nd member) | 11279th | |
| Roman numberals | ||
| Base 2 | 100111000010100101012 | 100111000010100101102 |
| Base 3 | 10121111020213 | 10121111020223 |
| Base 4 | 21300221114 | 21300221124 |
| Base 5 | 1304320225 | 1304320235 |
| Base 6 | 214131416 | 214131426 |
| Base 7 | 53025557 | 53025567 |
| Base 8 | 23412258 | 23412268 |
| Base 9 | 11743679 | 11743689 |
| Base 10 | 63963710 | 63963810 |
| Base 11 | 3a762911 | 3a762a11 |
| Base 12 | 26a1b112 | 26a1b212 |
| Base 13 | 1951ab13 | 1951ac13 |
| Base 14 | 12916514 | 12916614 |
| Base 15 | c97c715 | c97c815 |
| Base 16 | 9c29516 | 9c29616 |