Compare 642881 vs 643121
| Property | 642881 | 643121 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6428811 | 6431211 |
| Prime factorization | 642881 | 643121 |
| Divisors count | 2 | 2 |
| Divisors | 1, 642881 | 1, 643121 |
| Number of properties | 6 | 3 |
| Additive primes | 20433rd | 20442nd |
| Chen primes | 20450th | |
| Cousin primes (2nd member) | 5645th | |
| Isolated primes | 40972nd | 40993rd |
| Primes | 52281st | 52302nd |
| Sophie germain primes | 5326th | |
| Roman numberals | ||
| Base 2 | 100111001111010000012 | 100111010000001100012 |
| Base 3 | 10121222121023 | 10122000120223 |
| Base 4 | 21303310014 | 21310003014 |
| Base 5 | 1310330115 | 1310344415 |
| Base 6 | 214401456 | 214412256 |
| Base 7 | 53152017 | 53156637 |
| Base 8 | 23475018 | 23500618 |
| Base 9 | 11787729 | 11801689 |
| Base 10 | 64288110 | 64312110 |
| Base 11 | 3aa00811 | 3aa20611 |
| Base 12 | 27005512 | 27021512 |
| Base 13 | 19680513 | 19695b13 |
| Base 14 | 12a40114 | 12a53314 |
| Base 15 | ca73b15 | ca84b15 |
| Base 16 | 9cf4116 | 9d03116 |