Compare 640891 vs 640901
| Property | 640891 | 640901 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6408911 | 6409011 |
| Prime factorization | 640891 | 640901 |
| Divisors count | 2 | 2 |
| Divisors | 1, 640891 | 1, 640901 |
| Number of properties | 2 | 5 |
| Chen primes | 20403rd | |
| Isolated primes | 40865th | 40866th |
| Primes | 52140th | 52141st |
| Sexy primes (1st member) | 11298th | |
| Sophie germain primes | 5313th | |
| Roman numberals | ||
| Base 2 | 100111000111011110112 | 100111000111100001012 |
| Base 3 | 10121200102013 | 10121200110023 |
| Base 4 | 21301313234 | 21301320114 |
| Base 5 | 1310020315 | 1310021015 |
| Base 6 | 214230316 | 214230456 |
| Base 7 | 53063267 | 53063427 |
| Base 8 | 23435738 | 23436058 |
| Base 9 | 11761219 | 11761329 |
| Base 10 | 64089110 | 64090110 |
| Base 11 | 3a856911 | 3a857811 |
| Base 12 | 26aa7712 | 26aa8512 |
| Base 13 | 19593413 | 19594113 |
| Base 14 | 1297bd14 | 1297c914 |
| Base 15 | c9d6115 | c9d6b15 |
| Base 16 | 9c77b16 | 9c78516 |