Compare 642149 vs 642557
| Property | 642149 | 642557 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6421491 | 6425571 |
| Prime factorization | 642149 | 642557 |
| Divisors count | 2 | 2 |
| Divisors | 1, 642149 | 1, 642557 |
| Number of properties | 3 | 5 |
| Additive primes | 20425th | |
| Chen primes | 20432nd | 20442nd |
| Isolated primes | 40957th | |
| Primes | 52232nd | 52260th |
| Sexy primes (1st member) | 11323rd | |
| Twin primes (1st member) | 5649th | |
| Roman numberals | ||
| Base 2 | 100111001100011001012 | 100111001101111111012 |
| Base 3 | 10121212120223 | 10121221021023 |
| Base 4 | 21303012114 | 21303133314 |
| Base 5 | 1310220445 | 1310302125 |
| Base 6 | 214325256 | 214344456 |
| Base 7 | 53131047 | 53142267 |
| Base 8 | 23461458 | 23467758 |
| Base 9 | 11777689 | 11783729 |
| Base 10 | 64214910 | 64255710 |
| Base 11 | 3a950211 | 3a984311 |
| Base 12 | 26b74512 | 26ba2512 |
| Base 13 | 19639113 | 19661613 |
| Base 14 | 12a03b14 | 12a24d14 |
| Base 15 | ca3ee15 | ca5c215 |
| Base 16 | 9cc6516 | 9cdfd16 |