Compare 640009 vs 640163
| Property | 640009 | 640163 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6400091 | 6401631 |
| Prime factorization | 640009 | 640163 |
| Divisors count | 2 | 2 |
| Divisors | 1, 640009 | 1, 640163 |
| Number of properties | 6 | 4 |
| Additive primes | 20351st | |
| Chen primes | 20378th | 20385th |
| Happy primes | 7413th | |
| Isolated primes | 40826th | |
| Lucky primes | 5978th | |
| Primes | 52076th | 52091st |
| Safe primes | 3018th | |
| Twin primes (2nd member) | 5632nd | |
| Roman numberals | ||
| Base 2 | 100111000100000010012 | 100111000100101000112 |
| Base 3 | 10121112210013 | 10121120102023 |
| Base 4 | 21301000214 | 21301022034 |
| Base 5 | 1304400145 | 1304411235 |
| Base 6 | 214150016 | 214154156 |
| Base 7 | 53036267 | 53042367 |
| Base 8 | 23420118 | 23422438 |
| Base 9 | 11748319 | 11751229 |
| Base 10 | 64000910 | 64016310 |
| Base 11 | 3a793711 | 3a7a6711 |
| Base 12 | 26a46112 | 26a56b12 |
| Base 13 | 19540613 | 1954c413 |
| Base 14 | 12934d14 | 12941d14 |
| Base 15 | c997415 | c9a2815 |
| Base 16 | 9c40916 | 9c4a316 |