Compare 639671 vs 640223
| Property | 639671 | 640223 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6396711 | 6402231 |
| Prime factorization | 639671 | 640223 |
| Divisors count | 2 | 2 |
| Divisors | 1, 639671 | 1, 640223 |
| Number of properties | 3 | 5 |
| Additive primes | 20360th | |
| Cousin primes (2nd member) | 5633rd | |
| Isolated primes | 40795th | 40829th |
| Primes | 52050th | 52094th |
| Sexy primes (1st member) | 11280th | 11287th |
| Roman numberals | ||
| Base 2 | 100111000010101101112 | 100111000100110111112 |
| Base 3 | 10121111101123 | 10121120122223 |
| Base 4 | 21300223134 | 21301031334 |
| Base 5 | 1304321415 | 1304413435 |
| Base 6 | 214132356 | 214155556 |
| Base 7 | 53026347 | 53043537 |
| Base 8 | 23412678 | 23423378 |
| Base 9 | 11744159 | 11751889 |
| Base 10 | 63967110 | 64022310 |
| Base 11 | 3a765a11 | 3a801111 |
| Base 12 | 26a21b12 | 26a5bb12 |
| Base 13 | 19520613 | 19553c13 |
| Base 14 | 12918b14 | 12946314 |
| Base 15 | c97eb15 | c9a6815 |
| Base 16 | 9c2b716 | 9c4df16 |