Compare 640121 vs 640901
| Property | 640121 | 640901 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6401211 | 6409011 |
| Prime factorization | 640121 | 640901 |
| Divisors count | 2 | 2 |
| Divisors | 1, 640121 | 1, 640901 |
| Number of properties | 4 | 5 |
| Chen primes | 20382nd | 20403rd |
| Isolated primes | 40823rd | 40866th |
| Primes | 52086th | 52141st |
| Sexy primes (1st member) | 11286th | 11298th |
| Sophie germain primes | 5313th | |
| Roman numberals | ||
| Base 2 | 100111000100011110012 | 100111000111100001012 |
| Base 3 | 10121120020123 | 10121200110023 |
| Base 4 | 21301013214 | 21301320114 |
| Base 5 | 1304404415 | 1310021015 |
| Base 6 | 214153056 | 214230456 |
| Base 7 | 53041467 | 53063427 |
| Base 8 | 23421718 | 23436058 |
| Base 9 | 11750659 | 11761329 |
| Base 10 | 64012110 | 64090110 |
| Base 11 | 3a7a2911 | 3a857811 |
| Base 12 | 26a53512 | 26aa8512 |
| Base 13 | 19549113 | 19594113 |
| Base 14 | 1293cd14 | 1297c914 |
| Base 15 | c99eb15 | c9d6b15 |
| Base 16 | 9c47916 | 9c78516 |