Compare 640721 vs 640733
| Property | 640721 | 640733 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 671 × 731 × 1311 | 6407331 |
| Prime factorization | 67 × 73 × 131 | 640733 |
| Divisors count | 8 | 2 |
| Divisors | 1, 67, 73, 131, 4891, 8777, 9563, 640721 | 1, 640733 |
| Number of properties | 0 | 5 |
| Additive primes | 20374th | |
| Chen primes | 20399th | |
| Isolated primes | 40855th | |
| Primes | 52130th | |
| Sexy primes (2nd member) | 11294th | |
| Roman numberals | ||
| Base 2 | 100111000110110100012 | 100111000110110111012 |
| Base 3 | 10121122201023 | 10121122202123 |
| Base 4 | 21301231014 | 21301231314 |
| Base 5 | 1310003415 | 1310004135 |
| Base 6 | 214221456 | 214222056 |
| Base 7 | 53056647 | 53060127 |
| Base 8 | 23433218 | 23433358 |
| Base 9 | 11758129 | 11758259 |
| Base 10 | 64072110 | 64073310 |
| Base 11 | 3a842411 | 3a843511 |
| Base 12 | 26a95512 | 26a96512 |
| Base 13 | 19583313 | 19584213 |
| Base 14 | 1296db14 | 12970914 |
| Base 15 | c9c9b15 | c9ca815 |
| Base 16 | 9c6d116 | 9c6dd16 |