Compare 640139 vs 640421
| Property | 640139 | 640421 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6401391 | 6404211 |
| Prime factorization | 640139 | 640421 |
| Divisors count | 2 | 2 |
| Divisors | 1, 640139 | 1, 640421 |
| Number of properties | 4 | 3 |
| Additive primes | 20356th | 20365th |
| Chen primes | 20383rd | |
| Isolated primes | 40825th | 40838th |
| Primes | 52088th | 52109th |
| Roman numberals | ||
| Base 2 | 100111000100100010112 | 100111000101101001012 |
| Base 3 | 10121120022123 | 10121121110223 |
| Base 4 | 21301020234 | 21301122114 |
| Base 5 | 1304410245 | 1304431415 |
| Base 6 | 214153356 | 214205256 |
| Base 7 | 53042037 | 53050557 |
| Base 8 | 23422138 | 23426458 |
| Base 9 | 11750859 | 11754389 |
| Base 10 | 64013910 | 64042110 |
| Base 11 | 3a7a4511 | 3a818111 |
| Base 12 | 26a54b12 | 26a74512 |
| Base 13 | 1954a613 | 19566213 |
| Base 14 | 12940314 | 12956514 |
| Base 15 | c9a0e15 | c9b4b15 |
| Base 16 | 9c48b16 | 9c5a516 |