Compare 639959 vs 640631
| Property | 639959 | 640631 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6399591 | 6406311 |
| Prime factorization | 639959 | 640631 |
| Divisors count | 2 | 2 |
| Divisors | 1, 639959 | 1, 640631 |
| Number of properties | 6 | 3 |
| Additive primes | 20348th | |
| Chen primes | 20375th | |
| Happy primes | 7411th | |
| Isolated primes | 40811th | 40849th |
| Primes | 52072nd | 52122nd |
| Sophie germain primes | 5307th | 5310th |
| Roman numberals | ||
| Base 2 | 100111000011110101112 | 100111000110011101112 |
| Base 3 | 10121112120123 | 10121122100023 |
| Base 4 | 21300331134 | 21301213134 |
| Base 5 | 1304343145 | 1310000115 |
| Base 6 | 214144356 | 214215156 |
| Base 7 | 53035257 | 53055057 |
| Base 8 | 23417278 | 23431678 |
| Base 9 | 11747659 | 11757029 |
| Base 10 | 63995910 | 64063110 |
| Base 11 | 3a78a111 | 3a835211 |
| Base 12 | 26a41b12 | 26a89b12 |
| Base 13 | 19539813 | 19579413 |
| Base 14 | 12931514 | 12967514 |
| Base 15 | c993e15 | c9c3b15 |
| Base 16 | 9c3d716 | 9c67716 |