Compare 640307 vs 642407
| Property | 640307 | 642407 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6403071 | 6424071 |
| Prime factorization | 640307 | 642407 |
| Divisors count | 2 | 2 |
| Divisors | 1, 640307 | 1, 642407 |
| Number of properties | 5 | 6 |
| Additive primes | 20422nd | |
| Chen primes | 20390th | 20437th |
| Cousin primes (2nd member) | 5634th | 5643rd |
| Isolated primes | 40833rd | 40949th |
| Primes | 52104th | 52250th |
| Safe primes | 3019th | 3025th |
| Roman numberals | ||
| Base 2 | 100111000101001100112 | 100111001101011001112 |
| Base 3 | 10121121000023 | 10121220122123 |
| Base 4 | 21301103034 | 21303112134 |
| Base 5 | 1304422125 | 1310241125 |
| Base 6 | 214202156 | 214340356 |
| Base 7 | 53045337 | 53136237 |
| Base 8 | 23424638 | 23465478 |
| Base 9 | 11753029 | 11781859 |
| Base 10 | 64030710 | 64240710 |
| Base 11 | 3a808811 | 3a971711 |
| Base 12 | 26a66b12 | 26b91b12 |
| Base 13 | 1955a513 | 19652c13 |
| Base 14 | 1294c314 | 12a18314 |
| Base 15 | c9ac215 | ca52215 |
| Base 16 | 9c53316 | 9cd6716 |