Compare 640901 vs 642809
| Property | 640901 | 642809 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6409011 | 6428091 |
| Prime factorization | 640901 | 642809 |
| Divisors count | 2 | 2 |
| Divisors | 1, 640901 | 1, 642809 |
| Number of properties | 5 | 4 |
| Additive primes | 20432nd | |
| Chen primes | 20403rd | |
| Isolated primes | 40866th | 40968th |
| Primes | 52141st | 52275th |
| Sexy primes (1st member) | 11298th | |
| Sophie germain primes | 5313th | 5325th |
| Roman numberals | ||
| Base 2 | 100111000111100001012 | 100111001110111110012 |
| Base 3 | 10121200110023 | 10121222022023 |
| Base 4 | 21301320114 | 21303233214 |
| Base 5 | 1310021015 | 1310322145 |
| Base 6 | 214230456 | 214355456 |
| Base 7 | 53063427 | 53150367 |
| Base 8 | 23436058 | 23473718 |
| Base 9 | 11761329 | 11786829 |
| Base 10 | 64090110 | 64280910 |
| Base 11 | 3a857811 | 3a9a5211 |
| Base 12 | 26aa8512 | 26bbb512 |
| Base 13 | 19594113 | 19677b13 |
| Base 14 | 1297c914 | 12a38d14 |
| Base 15 | c9d6b15 | ca6de15 |
| Base 16 | 9c78516 | 9cef916 |