Compare 645973 vs 645985
| Property | 645973 | 645985 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 6459731 | 51 × 1291971 |
| Prime factorization | 645973 | 5 × 129197 |
| Divisors count | 2 | 4 |
| Divisors | 1, 645973 | 1, 5, 129197, 645985 |
| Number of properties | 3 | 1 |
| Isolated primes | 41169th | |
| Primes | 52520th | |
| Semiprimes | 138365th | |
| Sexy primes (1st member) | 11374th | |
| Roman numberals | ||
| Base 2 | 100111011011010101012 | 100111011011011000012 |
| Base 3 | 10122110022213 | 10122110101013 |
| Base 4 | 21312311114 | 21312312014 |
| Base 5 | 1311323435 | 1311324205 |
| Base 6 | 215023416 | 215024016 |
| Base 7 | 53302067 | 53302247 |
| Base 8 | 23555258 | 23555418 |
| Base 9 | 11840879 | 11841119 |
| Base 10 | 64597310 | 64598510 |
| Base 11 | 40136911 | 40137a11 |
| Base 12 | 2719b112 | 271a0112 |
| Base 13 | 19804313 | 19805213 |
| Base 14 | 12b5ad14 | 12b5bb14 |
| Base 15 | cb5ed15 | cb60a15 |
| Base 16 | 9db5516 | 9db6116 |