Compare 639959 vs 640259
| Property | 639959 | 640259 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6399591 | 6402591 |
| Prime factorization | 639959 | 640259 |
| Divisors count | 2 | 2 |
| Divisors | 1, 639959 | 1, 640259 |
| Number of properties | 6 | 4 |
| Additive primes | 20348th | |
| Chen primes | 20375th | 20389th |
| Happy primes | 7411th | |
| Isolated primes | 40811th | |
| Primes | 52072nd | 52099th |
| Sophie germain primes | 5307th | 5308th |
| Twin primes (1st member) | 5636th | |
| Roman numberals | ||
| Base 2 | 100111000011110101112 | 100111000101000000112 |
| Base 3 | 10121112120123 | 10121120210223 |
| Base 4 | 21300331134 | 21301100034 |
| Base 5 | 1304343145 | 1304420145 |
| Base 6 | 214144356 | 214200556 |
| Base 7 | 53035257 | 53044347 |
| Base 8 | 23417278 | 23424038 |
| Base 9 | 11747659 | 11752389 |
| Base 10 | 63995910 | 64025910 |
| Base 11 | 3a78a111 | 3a804411 |
| Base 12 | 26a41b12 | 26a62b12 |
| Base 13 | 19539813 | 19556913 |
| Base 14 | 12931514 | 12948b14 |
| Base 15 | c993e15 | c9a8e15 |
| Base 16 | 9c3d716 | 9c50316 |