Compare 640529 vs 640907
| Property | 640529 | 640907 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6405291 | 6409071 |
| Prime factorization | 640529 | 640907 |
| Divisors count | 2 | 2 |
| Divisors | 1, 640529 | 1, 640907 |
| Number of properties | 3 | 4 |
| Chen primes | 20393rd | 20404th |
| Isolated primes | 40867th | |
| Primes | 52115th | 52142nd |
| Sexy primes (2nd member) | 11298th | |
| Twin primes (1st member) | 5637th | |
| Roman numberals | ||
| Base 2 | 100111000110000100012 | 100111000111100010112 |
| Base 3 | 10121121220223 | 10121200110223 |
| Base 4 | 21301201014 | 21301320234 |
| Base 5 | 1304441045 | 1310021125 |
| Base 6 | 214212256 | 214230556 |
| Base 7 | 53053017 | 53063517 |
| Base 8 | 23430218 | 23436138 |
| Base 9 | 11755689 | 11761389 |
| Base 10 | 64052910 | 64090710 |
| Base 11 | 3a826a11 | 3a858311 |
| Base 12 | 26a81512 | 26aa8b12 |
| Base 13 | 19571613 | 19594713 |
| Base 14 | 12960114 | 1297d114 |
| Base 15 | c9bbe15 | c9d7215 |
| Base 16 | 9c61116 | 9c78b16 |