Compare 642407 vs 642809
| Property | 642407 | 642809 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6424071 | 6428091 |
| Prime factorization | 642407 | 642809 |
| Divisors count | 2 | 2 |
| Divisors | 1, 642407 | 1, 642809 |
| Number of properties | 6 | 4 |
| Additive primes | 20422nd | 20432nd |
| Chen primes | 20437th | |
| Cousin primes (2nd member) | 5643rd | |
| Isolated primes | 40949th | 40968th |
| Primes | 52250th | 52275th |
| Safe primes | 3025th | |
| Sophie germain primes | 5325th | |
| Roman numberals | ||
| Base 2 | 100111001101011001112 | 100111001110111110012 |
| Base 3 | 10121220122123 | 10121222022023 |
| Base 4 | 21303112134 | 21303233214 |
| Base 5 | 1310241125 | 1310322145 |
| Base 6 | 214340356 | 214355456 |
| Base 7 | 53136237 | 53150367 |
| Base 8 | 23465478 | 23473718 |
| Base 9 | 11781859 | 11786829 |
| Base 10 | 64240710 | 64280910 |
| Base 11 | 3a971711 | 3a9a5211 |
| Base 12 | 26b91b12 | 26bbb512 |
| Base 13 | 19652c13 | 19677b13 |
| Base 14 | 12a18314 | 12a38d14 |
| Base 15 | ca52215 | ca6de15 |
| Base 16 | 9cd6716 | 9cef916 |