Compare 640421 vs 640649
| Property | 640421 | 640649 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6404211 | 6406491 |
| Prime factorization | 640421 | 640649 |
| Divisors count | 2 | 2 |
| Divisors | 1, 640421 | 1, 640649 |
| Number of properties | 3 | 3 |
| Additive primes | 20365th | 20370th |
| Isolated primes | 40838th | 40850th |
| Primes | 52109th | 52123rd |
| Roman numberals | ||
| Base 2 | 100111000101101001012 | 100111000110100010012 |
| Base 3 | 10121121110223 | 10121122102023 |
| Base 4 | 21301122114 | 21301220214 |
| Base 5 | 1304431415 | 1310000445 |
| Base 6 | 214205256 | 214215456 |
| Base 7 | 53050557 | 53055327 |
| Base 8 | 23426458 | 23432118 |
| Base 9 | 11754389 | 11757229 |
| Base 10 | 64042110 | 64064910 |
| Base 11 | 3a818111 | 3a836911 |
| Base 12 | 26a74512 | 26a8b512 |
| Base 13 | 19566213 | 1957a913 |
| Base 14 | 12956514 | 12968914 |
| Base 15 | c9b4b15 | c9c4e15 |
| Base 16 | 9c5a516 | 9c68916 |