Compare 640223 vs 640457
| Property | 640223 | 640457 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6402231 | 6404571 |
| Prime factorization | 640223 | 640457 |
| Divisors count | 2 | 2 |
| Divisors | 1, 640223 | 1, 640457 |
| Number of properties | 5 | 4 |
| Additive primes | 20360th | |
| Chen primes | 20391st | |
| Cousin primes (2nd member) | 5633rd | |
| Isolated primes | 40829th | 40839th |
| Primes | 52094th | 52110th |
| Sexy primes (1st member) | 11287th | 11290th |
| Roman numberals | ||
| Base 2 | 100111000100110111112 | 100111000101110010012 |
| Base 3 | 10121120122223 | 10121121121223 |
| Base 4 | 21301031334 | 21301130214 |
| Base 5 | 1304413435 | 1304433125 |
| Base 6 | 214155556 | 214210256 |
| Base 7 | 53043537 | 53051367 |
| Base 8 | 23423378 | 23427118 |
| Base 9 | 11751889 | 11754789 |
| Base 10 | 64022310 | 64045710 |
| Base 11 | 3a801111 | 3a820411 |
| Base 12 | 26a5bb12 | 26a77512 |
| Base 13 | 19553c13 | 19568c13 |
| Base 14 | 12946314 | 12958d14 |
| Base 15 | c9a6815 | c9b7215 |
| Base 16 | 9c4df16 | 9c5c916 |