Compare 640121 vs 640363
| Property | 640121 | 640363 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6401211 | 6403631 |
| Prime factorization | 640121 | 640363 |
| Divisors count | 2 | 2 |
| Divisors | 1, 640121 | 1, 640363 |
| Number of properties | 4 | 4 |
| Chen primes | 20382nd | |
| Isolated primes | 40823rd | 40835th |
| Lucky primes | 5981st | |
| Primes | 52086th | 52106th |
| Sexy primes (1st member) | 11286th | 11289th |
| Roman numberals | ||
| Base 2 | 100111000100011110012 | 100111000101011010112 |
| Base 3 | 10121120020123 | 10121121020113 |
| Base 4 | 21301013214 | 21301112234 |
| Base 5 | 1304404415 | 1304424235 |
| Base 6 | 214153056 | 214203516 |
| Base 7 | 53041467 | 53046437 |
| Base 8 | 23421718 | 23425538 |
| Base 9 | 11750659 | 11753649 |
| Base 10 | 64012110 | 64036310 |
| Base 11 | 3a7a2911 | 3a812911 |
| Base 12 | 26a53512 | 26a6b712 |
| Base 13 | 19549113 | 19561913 |
| Base 14 | 1293cd14 | 12952314 |
| Base 15 | c99eb15 | c9b0d15 |
| Base 16 | 9c47916 | 9c56b16 |