Compare 642809 vs 643031
| Property | 642809 | 643031 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6428091 | 6430311 |
| Prime factorization | 642809 | 643031 |
| Divisors count | 2 | 2 |
| Divisors | 1, 642809 | 1, 643031 |
| Number of properties | 4 | 4 |
| Additive primes | 20432nd | 20438th |
| Chen primes | 20453rd | |
| Isolated primes | 40968th | 40984th |
| Primes | 52275th | 52293rd |
| Sophie germain primes | 5325th | |
| Roman numberals | ||
| Base 2 | 100111001110111110012 | 100111001111110101112 |
| Base 3 | 10121222022023 | 10122000012223 |
| Base 4 | 21303233214 | 21303331134 |
| Base 5 | 1310322145 | 1310341115 |
| Base 6 | 214355456 | 214405556 |
| Base 7 | 53150367 | 53155047 |
| Base 8 | 23473718 | 23477278 |
| Base 9 | 11786829 | 11800589 |
| Base 10 | 64280910 | 64303110 |
| Base 11 | 3a9a5211 | 3aa13411 |
| Base 12 | 26bbb512 | 27015b12 |
| Base 13 | 19677b13 | 1968bc13 |
| Base 14 | 12a38d14 | 12a4ab14 |
| Base 15 | ca6de15 | ca7db15 |
| Base 16 | 9cef916 | 9cfd716 |