Compare 640421 vs 640579
| Property | 640421 | 640579 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6404211 | 6405791 |
| Prime factorization | 640421 | 640579 |
| Divisors count | 2 | 2 |
| Divisors | 1, 640421 | 1, 640579 |
| Number of properties | 3 | 4 |
| Additive primes | 20365th | 20368th |
| Cousin primes (1st member) | 5635th | |
| Isolated primes | 40838th | 40844th |
| Primes | 52109th | 52117th |
| Roman numberals | ||
| Base 2 | 100111000101101001012 | 100111000110010000112 |
| Base 3 | 10121121110223 | 10121122010113 |
| Base 4 | 21301122114 | 21301210034 |
| Base 5 | 1304431415 | 1304443045 |
| Base 6 | 214205256 | 214213516 |
| Base 7 | 53050557 | 53054027 |
| Base 8 | 23426458 | 23431038 |
| Base 9 | 11754389 | 11756349 |
| Base 10 | 64042110 | 64057910 |
| Base 11 | 3a818111 | 3a830511 |
| Base 12 | 26a74512 | 26a85712 |
| Base 13 | 19566213 | 19575413 |
| Base 14 | 12956514 | 12963914 |
| Base 15 | c9b4b15 | c9c0415 |
| Base 16 | 9c5a516 | 9c64316 |