Compare 639665 vs 639671
| Property | 639665 | 639671 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 4 | 1 |
| Prime factorization | 51 × 132 × 7571 | 6396711 |
| Prime factorization | 5 × 13 × 13 × 757 | 639671 |
| Divisors count | 12 | 2 |
| Divisors | 1, 5, 13, 65, 169, 757, 845, 3785, 9841, 49205, 127933, 639665 | 1, 639671 |
| Number of properties | 0 | 3 |
| Isolated primes | 40795th | |
| Primes | 52050th | |
| Sexy primes (1st member) | 11280th | |
| Roman numberals | ||
| Base 2 | 100111000010101100012 | 100111000010101101112 |
| Base 3 | 10121111100223 | 10121111101123 |
| Base 4 | 21300223014 | 21300223134 |
| Base 5 | 1304321305 | 1304321415 |
| Base 6 | 214132256 | 214132356 |
| Base 7 | 53026257 | 53026347 |
| Base 8 | 23412618 | 23412678 |
| Base 9 | 11744089 | 11744159 |
| Base 10 | 63966510 | 63967110 |
| Base 11 | 3a765411 | 3a765a11 |
| Base 12 | 26a21512 | 26a21b12 |
| Base 13 | 19520013 | 19520613 |
| Base 14 | 12918514 | 12918b14 |
| Base 15 | c97e515 | c97eb15 |
| Base 16 | 9c2b116 | 9c2b716 |