Compare 640457 vs 640631
| Property | 640457 | 640631 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6404571 | 6406311 |
| Prime factorization | 640457 | 640631 |
| Divisors count | 2 | 2 |
| Divisors | 1, 640457 | 1, 640631 |
| Number of properties | 4 | 3 |
| Chen primes | 20391st | |
| Isolated primes | 40839th | 40849th |
| Primes | 52110th | 52122nd |
| Sexy primes (1st member) | 11290th | |
| Sophie germain primes | 5310th | |
| Roman numberals | ||
| Base 2 | 100111000101110010012 | 100111000110011101112 |
| Base 3 | 10121121121223 | 10121122100023 |
| Base 4 | 21301130214 | 21301213134 |
| Base 5 | 1304433125 | 1310000115 |
| Base 6 | 214210256 | 214215156 |
| Base 7 | 53051367 | 53055057 |
| Base 8 | 23427118 | 23431678 |
| Base 9 | 11754789 | 11757029 |
| Base 10 | 64045710 | 64063110 |
| Base 11 | 3a820411 | 3a835211 |
| Base 12 | 26a77512 | 26a89b12 |
| Base 13 | 19568c13 | 19579413 |
| Base 14 | 12958d14 | 12967514 |
| Base 15 | c9b7215 | c9c3b15 |
| Base 16 | 9c5c916 | 9c67716 |