Compare 639959 vs 640163
| Property | 639959 | 640163 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6399591 | 6401631 |
| Prime factorization | 639959 | 640163 |
| Divisors count | 2 | 2 |
| Divisors | 1, 639959 | 1, 640163 |
| Number of properties | 6 | 4 |
| Additive primes | 20348th | |
| Chen primes | 20375th | 20385th |
| Happy primes | 7411th | |
| Isolated primes | 40811th | 40826th |
| Primes | 52072nd | 52091st |
| Safe primes | 3018th | |
| Sophie germain primes | 5307th | |
| Roman numberals | ||
| Base 2 | 100111000011110101112 | 100111000100101000112 |
| Base 3 | 10121112120123 | 10121120102023 |
| Base 4 | 21300331134 | 21301022034 |
| Base 5 | 1304343145 | 1304411235 |
| Base 6 | 214144356 | 214154156 |
| Base 7 | 53035257 | 53042367 |
| Base 8 | 23417278 | 23422438 |
| Base 9 | 11747659 | 11751229 |
| Base 10 | 63995910 | 64016310 |
| Base 11 | 3a78a111 | 3a7a6711 |
| Base 12 | 26a41b12 | 26a56b12 |
| Base 13 | 19539813 | 1954c413 |
| Base 14 | 12931514 | 12941d14 |
| Base 15 | c993e15 | c9a2815 |
| Base 16 | 9c3d716 | 9c4a316 |