Compare 640631 vs 641213
| Property | 640631 | 641213 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6406311 | 6412131 |
| Prime factorization | 640631 | 641213 |
| Divisors count | 2 | 2 |
| Divisors | 1, 640631 | 1, 641213 |
| Number of properties | 3 | 4 |
| Additive primes | 20388th | |
| Isolated primes | 40849th | 40888th |
| Primes | 52122nd | 52165th |
| Sophie germain primes | 5310th | 5316th |
| Roman numberals | ||
| Base 2 | 100111000110011101112 | 100111001000101111012 |
| Base 3 | 10121122100023 | 10121201201223 |
| Base 4 | 21301213134 | 21302023314 |
| Base 5 | 1310000115 | 1310043235 |
| Base 6 | 214215156 | 214243256 |
| Base 7 | 53055057 | 53102667 |
| Base 8 | 23431678 | 23442758 |
| Base 9 | 11757029 | 11765189 |
| Base 10 | 64063110 | 64121310 |
| Base 11 | 3a835211 | 3a883111 |
| Base 12 | 26a89b12 | 26b0a512 |
| Base 13 | 19579413 | 195b2113 |
| Base 14 | 12967514 | 12996d14 |
| Base 15 | c9c3b15 | c9ec815 |
| Base 16 | 9c67716 | 9c8bd16 |