Compare 642623 vs 642881
| Property | 642623 | 642881 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6426231 | 6428811 |
| Prime factorization | 642623 | 642881 |
| Divisors count | 2 | 2 |
| Divisors | 1, 642623 | 1, 642881 |
| Number of properties | 5 | 6 |
| Additive primes | 20426th | 20433rd |
| Chen primes | 20450th | |
| Cousin primes (2nd member) | 5645th | |
| Isolated primes | 40961st | 40972nd |
| Primes | 52264th | 52281st |
| Safe primes | 3026th | |
| Sophie germain primes | 5324th | 5326th |
| Roman numberals | ||
| Base 2 | 100111001110001111112 | 100111001111010000012 |
| Base 3 | 10121221112123 | 10121222121023 |
| Base 4 | 21303203334 | 21303310014 |
| Base 5 | 1310304435 | 1310330115 |
| Base 6 | 214350356 | 214401456 |
| Base 7 | 53143527 | 53152017 |
| Base 8 | 23470778 | 23475018 |
| Base 9 | 11784559 | 11787729 |
| Base 10 | 64262310 | 64288110 |
| Base 11 | 3a98a311 | 3aa00811 |
| Base 12 | 26ba7b12 | 27005512 |
| Base 13 | 19666713 | 19680513 |
| Base 14 | 12a29914 | 12a40114 |
| Base 15 | ca61815 | ca73b15 |
| Base 16 | 9ce3f16 | 9cf4116 |