Compare 639685 vs 639689
| Property | 639685 | 639689 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 51 × 311 × 41271 | 6396891 |
| Prime factorization | 5 × 31 × 4127 | 639689 |
| Divisors count | 8 | 2 |
| Divisors | 1, 5, 31, 155, 4127, 20635, 127937, 639685 | 1, 639689 |
| Number of properties | 0 | 4 |
| Additive primes | 20341st | |
| Chen primes | 20364th | |
| Isolated primes | 40796th | |
| Primes | 52053rd | |
| Roman numberals | ||
| Base 2 | 100111000010110001012 | 100111000010110010012 |
| Base 3 | 10121111110013 | 10121111110123 |
| Base 4 | 21300230114 | 21300230214 |
| Base 5 | 1304322205 | 1304322245 |
| Base 6 | 214133016 | 214133056 |
| Base 7 | 53026547 | 53026617 |
| Base 8 | 23413058 | 23413118 |
| Base 9 | 11744319 | 11744359 |
| Base 10 | 63968510 | 63968910 |
| Base 11 | 3a767211 | 3a767611 |
| Base 12 | 26a23112 | 26a23512 |
| Base 13 | 19521713 | 19521b13 |
| Base 14 | 12919b14 | 1291a114 |
| Base 15 | c980a15 | c980e15 |
| Base 16 | 9c2c516 | 9c2c916 |