Compare 642997 vs 643187
| Property | 642997 | 643187 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6429971 | 6431871 |
| Prime factorization | 642997 | 643187 |
| Divisors count | 2 | 2 |
| Divisors | 1, 642997 | 1, 643187 |
| Number of properties | 3 | 6 |
| Additive primes | 20437th | 20443rd |
| Chen primes | 20457th | |
| Cousin primes (2nd member) | 5648th | |
| Isolated primes | 40981st | 40996th |
| Primes | 52290th | 52305th |
| Safe primes | 3029th | |
| Roman numberals | ||
| Base 2 | 100111001111101101012 | 100111010000011100112 |
| Base 3 | 10122000002013 | 10122000212023 |
| Base 4 | 21303323114 | 21310013034 |
| Base 5 | 1310334425 | 1310402225 |
| Base 6 | 214405016 | 214414156 |
| Base 7 | 53154257 | 53161167 |
| Base 8 | 23476658 | 23501638 |
| Base 9 | 11800219 | 11802529 |
| Base 10 | 64299710 | 64318710 |
| Base 11 | 3aa10311 | 3aa26611 |
| Base 12 | 27013112 | 27026b12 |
| Base 13 | 19689413 | 1969ac13 |
| Base 14 | 12a48514 | 12a57d14 |
| Base 15 | ca7b715 | ca89215 |
| Base 16 | 9cfb516 | 9d07316 |