Compare 640889 vs 640901
| Property | 640889 | 640901 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 191 × 891 × 3791 | 6409011 |
| Prime factorization | 19 × 89 × 379 | 640901 |
| Divisors count | 8 | 2 |
| Divisors | 1, 19, 89, 379, 1691, 7201, 33731, 640889 | 1, 640901 |
| Number of properties | 0 | 5 |
| Chen primes | 20403rd | |
| Isolated primes | 40866th | |
| Primes | 52141st | |
| Sexy primes (1st member) | 11298th | |
| Sophie germain primes | 5313th | |
| Roman numberals | ||
| Base 2 | 100111000111011110012 | 100111000111100001012 |
| Base 3 | 10121200101223 | 10121200110023 |
| Base 4 | 21301313214 | 21301320114 |
| Base 5 | 1310020245 | 1310021015 |
| Base 6 | 214230256 | 214230456 |
| Base 7 | 53063247 | 53063427 |
| Base 8 | 23435718 | 23436058 |
| Base 9 | 11761189 | 11761329 |
| Base 10 | 64088910 | 64090110 |
| Base 11 | 3a856711 | 3a857811 |
| Base 12 | 26aa7512 | 26aa8512 |
| Base 13 | 19593213 | 19594113 |
| Base 14 | 1297bb14 | 1297c914 |
| Base 15 | c9d5e15 | c9d6b15 |
| Base 16 | 9c77916 | 9c78516 |