Compare 639959 vs 640139
| Property | 639959 | 640139 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6399591 | 6401391 |
| Prime factorization | 639959 | 640139 |
| Divisors count | 2 | 2 |
| Divisors | 1, 639959 | 1, 640139 |
| Number of properties | 6 | 4 |
| Additive primes | 20348th | 20356th |
| Chen primes | 20375th | 20383rd |
| Happy primes | 7411th | |
| Isolated primes | 40811th | 40825th |
| Primes | 52072nd | 52088th |
| Sophie germain primes | 5307th | |
| Roman numberals | ||
| Base 2 | 100111000011110101112 | 100111000100100010112 |
| Base 3 | 10121112120123 | 10121120022123 |
| Base 4 | 21300331134 | 21301020234 |
| Base 5 | 1304343145 | 1304410245 |
| Base 6 | 214144356 | 214153356 |
| Base 7 | 53035257 | 53042037 |
| Base 8 | 23417278 | 23422138 |
| Base 9 | 11747659 | 11750859 |
| Base 10 | 63995910 | 64013910 |
| Base 11 | 3a78a111 | 3a7a4511 |
| Base 12 | 26a41b12 | 26a54b12 |
| Base 13 | 19539813 | 1954a613 |
| Base 14 | 12931514 | 12940314 |
| Base 15 | c993e15 | c9a0e15 |
| Base 16 | 9c3d716 | 9c48b16 |