Compare 642881 vs 643213
| Property | 642881 | 643213 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6428811 | 6432131 |
| Prime factorization | 642881 | 643213 |
| Divisors count | 2 | 2 |
| Divisors | 1, 642881 | 1, 643213 |
| Number of properties | 6 | 4 |
| Additive primes | 20433rd | 20444th |
| Chen primes | 20450th | |
| Cousin primes (1st member) | 5649th | |
| Cousin primes (2nd member) | 5645th | |
| Isolated primes | 40972nd | 40998th |
| Primes | 52281st | 52307th |
| Sophie germain primes | 5326th | |
| Roman numberals | ||
| Base 2 | 100111001111010000012 | 100111010000100011012 |
| Base 3 | 10121222121023 | 10122000222013 |
| Base 4 | 21303310014 | 21310020314 |
| Base 5 | 1310330115 | 1310403235 |
| Base 6 | 214401456 | 214415016 |
| Base 7 | 53152017 | 53161547 |
| Base 8 | 23475018 | 23502158 |
| Base 9 | 11787729 | 11802819 |
| Base 10 | 64288110 | 64321310 |
| Base 11 | 3aa00811 | 3aa28a11 |
| Base 12 | 27005512 | 27029112 |
| Base 13 | 19680513 | 1969cc13 |
| Base 14 | 12a40114 | 12a59b14 |
| Base 15 | ca73b15 | ca8ad15 |
| Base 16 | 9cf4116 | 9d08d16 |