Compare 640682 vs 640691
| Property | 640682 | 640691 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 21 × 71 × 457631 | 6406911 |
| Prime factorization | 2 × 7 × 45763 | 640691 |
| Divisors count | 8 | 2 |
| Divisors | 1, 2, 7, 14, 45763, 91526, 320341, 640682 | 1, 640691 |
| Number of properties | 0 | 5 |
| Chen primes | 20397th | |
| Cousin primes (2nd member) | 5637th | |
| Isolated primes | 40853rd | |
| Primes | 52128th | |
| Sophie germain primes | 5311th | |
| Roman numberals | ||
| Base 2 | 100111000110101010102 | 100111000110101100112 |
| Base 3 | 10121122112223 | 10121122120223 |
| Base 4 | 21301222224 | 21301223034 |
| Base 5 | 1310002125 | 1310002315 |
| Base 6 | 214220426 | 214220556 |
| Base 7 | 53056107 | 53056227 |
| Base 8 | 23432528 | 23432638 |
| Base 9 | 11757589 | 11757689 |
| Base 10 | 64068210 | 64069110 |
| Base 11 | 3a839911 | 3a83a711 |
| Base 12 | 26a92212 | 26a92b12 |
| Base 13 | 19580313 | 19580c13 |
| Base 14 | 1296b014 | 1296b914 |
| Base 15 | c9c7215 | c9c7b15 |
| Base 16 | 9c6aa16 | 9c6b316 |