Compare 640039 vs 640163
| Property | 640039 | 640163 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6400391 | 6401631 |
| Prime factorization | 640039 | 640163 |
| Divisors count | 2 | 2 |
| Divisors | 1, 640039 | 1, 640163 |
| Number of properties | 4 | 4 |
| Chen primes | 20385th | |
| Cousin primes (1st member) | 5632nd | |
| Isolated primes | 40816th | 40826th |
| Lucky primes | 5979th | |
| Primes | 52079th | 52091st |
| Safe primes | 3018th | |
| Roman numberals | ||
| Base 2 | 100111000100001001112 | 100111000100101000112 |
| Base 3 | 10121112220113 | 10121120102023 |
| Base 4 | 21301002134 | 21301022034 |
| Base 5 | 1304401245 | 1304411235 |
| Base 6 | 214150516 | 214154156 |
| Base 7 | 53040017 | 53042367 |
| Base 8 | 23420478 | 23422438 |
| Base 9 | 11748649 | 11751229 |
| Base 10 | 64003910 | 64016310 |
| Base 11 | 3a796411 | 3a7a6711 |
| Base 12 | 26a48712 | 26a56b12 |
| Base 13 | 19542a13 | 1954c413 |
| Base 14 | 12937114 | 12941d14 |
| Base 15 | c999415 | c9a2815 |
| Base 16 | 9c42716 | 9c4a316 |