Compare 640421 vs 640847
| Property | 640421 | 640847 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6404211 | 6408471 |
| Prime factorization | 640421 | 640847 |
| Divisors count | 2 | 2 |
| Divisors | 1, 640421 | 1, 640847 |
| Number of properties | 3 | 5 |
| Additive primes | 20365th | 20377th |
| Isolated primes | 40838th | 40861st |
| Primes | 52109th | 52136th |
| Sexy primes (1st member) | 11296th | |
| Sexy prime triplets (1st member) | 2072nd | |
| Roman numberals | ||
| Base 2 | 100111000101101001012 | 100111000111010011112 |
| Base 3 | 10121121110223 | 10121200020023 |
| Base 4 | 21301122114 | 21301310334 |
| Base 5 | 1304431415 | 1310013425 |
| Base 6 | 214205256 | 214225156 |
| Base 7 | 53050557 | 53062347 |
| Base 8 | 23426458 | 23435178 |
| Base 9 | 11754389 | 11760629 |
| Base 10 | 64042110 | 64084710 |
| Base 11 | 3a818111 | 3a852911 |
| Base 12 | 26a74512 | 26aa3b12 |
| Base 13 | 19566213 | 1958cc13 |
| Base 14 | 12956514 | 12978b14 |
| Base 15 | c9b4b15 | c9d3215 |
| Base 16 | 9c5a516 | 9c74f16 |