Compare 640583 vs 642407
| Property | 640583 | 642407 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6405831 | 6424071 |
| Prime factorization | 640583 | 642407 |
| Divisors count | 2 | 2 |
| Divisors | 1, 640583 | 1, 642407 |
| Number of properties | 6 | 6 |
| Additive primes | 20422nd | |
| Chen primes | 20437th | |
| Cousin primes (2nd member) | 5635th | 5643rd |
| Isolated primes | 40845th | 40949th |
| Primes | 52118th | 52250th |
| Safe primes | 3020th | 3025th |
| Sexy primes (1st member) | 11292nd | |
| Sophie germain primes | 5309th | |
| Roman numberals | ||
| Base 2 | 100111000110010001112 | 100111001101011001112 |
| Base 3 | 10121122010223 | 10121220122123 |
| Base 4 | 21301210134 | 21303112134 |
| Base 5 | 1304443135 | 1310241125 |
| Base 6 | 214213556 | 214340356 |
| Base 7 | 53054067 | 53136237 |
| Base 8 | 23431078 | 23465478 |
| Base 9 | 11756389 | 11781859 |
| Base 10 | 64058310 | 64240710 |
| Base 11 | 3a830911 | 3a971711 |
| Base 12 | 26a85b12 | 26b91b12 |
| Base 13 | 19575813 | 19652c13 |
| Base 14 | 12963d14 | 12a18314 |
| Base 15 | c9c0815 | ca52215 |
| Base 16 | 9c64716 | 9cd6716 |