Compare 639959 vs 640121
| Property | 639959 | 640121 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6399591 | 6401211 |
| Prime factorization | 639959 | 640121 |
| Divisors count | 2 | 2 |
| Divisors | 1, 639959 | 1, 640121 |
| Number of properties | 6 | 4 |
| Additive primes | 20348th | |
| Chen primes | 20375th | 20382nd |
| Happy primes | 7411th | |
| Isolated primes | 40811th | 40823rd |
| Primes | 52072nd | 52086th |
| Sexy primes (1st member) | 11286th | |
| Sophie germain primes | 5307th | |
| Roman numberals | ||
| Base 2 | 100111000011110101112 | 100111000100011110012 |
| Base 3 | 10121112120123 | 10121120020123 |
| Base 4 | 21300331134 | 21301013214 |
| Base 5 | 1304343145 | 1304404415 |
| Base 6 | 214144356 | 214153056 |
| Base 7 | 53035257 | 53041467 |
| Base 8 | 23417278 | 23421718 |
| Base 9 | 11747659 | 11750659 |
| Base 10 | 63995910 | 64012110 |
| Base 11 | 3a78a111 | 3a7a2911 |
| Base 12 | 26a41b12 | 26a53512 |
| Base 13 | 19539813 | 19549113 |
| Base 14 | 12931514 | 1293cd14 |
| Base 15 | c993e15 | c99eb15 |
| Base 16 | 9c3d716 | 9c47916 |