Compare 639839 vs 639845
| Property | 639839 | 639845 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 3 |
| Prime factorization | 6398391 | 51 × 731 × 17531 |
| Prime factorization | 639839 | 5 × 73 × 1753 |
| Divisors count | 2 | 8 |
| Divisors | 1, 639839 | 1, 5, 73, 365, 1753, 8765, 127969, 639845 |
| Number of properties | 7 | 0 |
| Chen primes | 20370th | |
| Happy primes | 7410th | |
| Isolated primes | 40804th | |
| Primes | 52063rd | |
| Safe primes | 3015th | |
| Sexy primes (2nd member) | 11283rd | |
| Sophie germain primes | 5304th | |
| Roman numberals | ||
| Base 2 | 100111000011010111112 | 100111000011011001012 |
| Base 3 | 10121112002023 | 10121112002223 |
| Base 4 | 21300311334 | 21300312114 |
| Base 5 | 1304333245 | 1304333405 |
| Base 6 | 214141156 | 214141256 |
| Base 7 | 53032647 | 53033037 |
| Base 8 | 23415378 | 23415458 |
| Base 9 | 11746229 | 11746289 |
| Base 10 | 63983910 | 63984510 |
| Base 11 | 3a77a211 | 3a77a811 |
| Base 12 | 26a33b12 | 26a34512 |
| Base 13 | 19530513 | 19530b13 |
| Base 14 | 12926b14 | 12927314 |
| Base 15 | c98ae15 | c98b515 |
| Base 16 | 9c35f16 | 9c36516 |