Compare 639959 vs 640019
| Property | 639959 | 640019 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6399591 | 6400191 |
| Prime factorization | 639959 | 640019 |
| Divisors count | 2 | 2 |
| Divisors | 1, 639959 | 1, 640019 |
| Number of properties | 6 | 4 |
| Additive primes | 20348th | |
| Chen primes | 20375th | 20379th |
| Happy primes | 7411th | |
| Isolated primes | 40811th | 40814th |
| Primes | 52072nd | 52077th |
| Safe primes | 3016th | |
| Sophie germain primes | 5307th | |
| Roman numberals | ||
| Base 2 | 100111000011110101112 | 100111000100000100112 |
| Base 3 | 10121112120123 | 10121112211023 |
| Base 4 | 21300331134 | 21301001034 |
| Base 5 | 1304343145 | 1304400345 |
| Base 6 | 214144356 | 214150156 |
| Base 7 | 53035257 | 53036427 |
| Base 8 | 23417278 | 23420238 |
| Base 9 | 11747659 | 11748429 |
| Base 10 | 63995910 | 64001910 |
| Base 11 | 3a78a111 | 3a794611 |
| Base 12 | 26a41b12 | 26a46b12 |
| Base 13 | 19539813 | 19541313 |
| Base 14 | 12931514 | 12935914 |
| Base 15 | c993e15 | c997e15 |
| Base 16 | 9c3d716 | 9c41316 |