Compare 642881 vs 643199
| Property | 642881 | 643199 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6428811 | 6431991 |
| Prime factorization | 642881 | 643199 |
| Divisors count | 2 | 2 |
| Divisors | 1, 642881 | 1, 643199 |
| Number of properties | 6 | 4 |
| Additive primes | 20433rd | |
| Chen primes | 20450th | 20458th |
| Cousin primes (2nd member) | 5645th | |
| Isolated primes | 40972nd | 40997th |
| Primes | 52281st | 52306th |
| Sophie germain primes | 5326th | 5329th |
| Roman numberals | ||
| Base 2 | 100111001111010000012 | 100111010000011111112 |
| Base 3 | 10121222121023 | 10122000220123 |
| Base 4 | 21303310014 | 21310013334 |
| Base 5 | 1310330115 | 1310402445 |
| Base 6 | 214401456 | 214414356 |
| Base 7 | 53152017 | 53161347 |
| Base 8 | 23475018 | 23501778 |
| Base 9 | 11787729 | 11802659 |
| Base 10 | 64288110 | 64319910 |
| Base 11 | 3aa00811 | 3aa27711 |
| Base 12 | 27005512 | 27027b12 |
| Base 13 | 19680513 | 1969bb13 |
| Base 14 | 12a40114 | 12a58b14 |
| Base 15 | ca73b15 | ca89e15 |
| Base 16 | 9cf4116 | 9d07f16 |