Compare 639839 vs 640019
| Property | 639839 | 640019 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6398391 | 6400191 |
| Prime factorization | 639839 | 640019 |
| Divisors count | 2 | 2 |
| Divisors | 1, 639839 | 1, 640019 |
| Number of properties | 7 | 4 |
| Chen primes | 20370th | 20379th |
| Happy primes | 7410th | |
| Isolated primes | 40804th | 40814th |
| Primes | 52063rd | 52077th |
| Safe primes | 3015th | 3016th |
| Sexy primes (2nd member) | 11283rd | |
| Sophie germain primes | 5304th | |
| Roman numberals | ||
| Base 2 | 100111000011010111112 | 100111000100000100112 |
| Base 3 | 10121112002023 | 10121112211023 |
| Base 4 | 21300311334 | 21301001034 |
| Base 5 | 1304333245 | 1304400345 |
| Base 6 | 214141156 | 214150156 |
| Base 7 | 53032647 | 53036427 |
| Base 8 | 23415378 | 23420238 |
| Base 9 | 11746229 | 11748429 |
| Base 10 | 63983910 | 64001910 |
| Base 11 | 3a77a211 | 3a794611 |
| Base 12 | 26a33b12 | 26a46b12 |
| Base 13 | 19530513 | 19541313 |
| Base 14 | 12926b14 | 12935914 |
| Base 15 | c98ae15 | c997e15 |
| Base 16 | 9c35f16 | 9c41316 |