Compare 640421 vs 640687
| Property | 640421 | 640687 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6404211 | 6406871 |
| Prime factorization | 640421 | 640687 |
| Divisors count | 2 | 2 |
| Divisors | 1, 640421 | 1, 640687 |
| Number of properties | 3 | 5 |
| Additive primes | 20365th | 20373rd |
| Cousin primes (1st member) | 5637th | |
| Isolated primes | 40838th | 40852nd |
| Primes | 52109th | 52127th |
| Super primes | 5330th | |
| Roman numberals | ||
| Base 2 | 100111000101101001012 | 100111000110101011112 |
| Base 3 | 10121121110223 | 10121122120113 |
| Base 4 | 21301122114 | 21301222334 |
| Base 5 | 1304431415 | 1310002225 |
| Base 6 | 214205256 | 214220516 |
| Base 7 | 53050557 | 53056157 |
| Base 8 | 23426458 | 23432578 |
| Base 9 | 11754389 | 11757649 |
| Base 10 | 64042110 | 64068710 |
| Base 11 | 3a818111 | 3a83a311 |
| Base 12 | 26a74512 | 26a92712 |
| Base 13 | 19566213 | 19580813 |
| Base 14 | 12956514 | 1296b514 |
| Base 15 | c9b4b15 | c9c7715 |
| Base 16 | 9c5a516 | 9c6af16 |