Compare 640421 vs 640631
| Property | 640421 | 640631 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6404211 | 6406311 |
| Prime factorization | 640421 | 640631 |
| Divisors count | 2 | 2 |
| Divisors | 1, 640421 | 1, 640631 |
| Number of properties | 3 | 3 |
| Additive primes | 20365th | |
| Isolated primes | 40838th | 40849th |
| Primes | 52109th | 52122nd |
| Sophie germain primes | 5310th | |
| Roman numberals | ||
| Base 2 | 100111000101101001012 | 100111000110011101112 |
| Base 3 | 10121121110223 | 10121122100023 |
| Base 4 | 21301122114 | 21301213134 |
| Base 5 | 1304431415 | 1310000115 |
| Base 6 | 214205256 | 214215156 |
| Base 7 | 53050557 | 53055057 |
| Base 8 | 23426458 | 23431678 |
| Base 9 | 11754389 | 11757029 |
| Base 10 | 64042110 | 64063110 |
| Base 11 | 3a818111 | 3a835211 |
| Base 12 | 26a74512 | 26a89b12 |
| Base 13 | 19566213 | 19579413 |
| Base 14 | 12956514 | 12967514 |
| Base 15 | c9b4b15 | c9c3b15 |
| Base 16 | 9c5a516 | 9c67716 |