Compare 640163 vs 642407
| Property | 640163 | 642407 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6401631 | 6424071 |
| Prime factorization | 640163 | 642407 |
| Divisors count | 2 | 2 |
| Divisors | 1, 640163 | 1, 642407 |
| Number of properties | 4 | 6 |
| Additive primes | 20422nd | |
| Chen primes | 20385th | 20437th |
| Cousin primes (2nd member) | 5643rd | |
| Isolated primes | 40826th | 40949th |
| Primes | 52091st | 52250th |
| Safe primes | 3018th | 3025th |
| Roman numberals | ||
| Base 2 | 100111000100101000112 | 100111001101011001112 |
| Base 3 | 10121120102023 | 10121220122123 |
| Base 4 | 21301022034 | 21303112134 |
| Base 5 | 1304411235 | 1310241125 |
| Base 6 | 214154156 | 214340356 |
| Base 7 | 53042367 | 53136237 |
| Base 8 | 23422438 | 23465478 |
| Base 9 | 11751229 | 11781859 |
| Base 10 | 64016310 | 64240710 |
| Base 11 | 3a7a6711 | 3a971711 |
| Base 12 | 26a56b12 | 26b91b12 |
| Base 13 | 1954c413 | 19652c13 |
| Base 14 | 12941d14 | 12a18314 |
| Base 15 | c9a2815 | ca52215 |
| Base 16 | 9c4a316 | 9cd6716 |