Compare 639839 vs 640151
| Property | 639839 | 640151 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6398391 | 6401511 |
| Prime factorization | 639839 | 640151 |
| Divisors count | 2 | 2 |
| Divisors | 1, 639839 | 1, 640151 |
| Number of properties | 7 | 5 |
| Additive primes | 20357th | |
| Chen primes | 20370th | 20384th |
| Happy primes | 7410th | 7414th |
| Isolated primes | 40804th | |
| Primes | 52063rd | 52089th |
| Safe primes | 3015th | |
| Sexy primes (2nd member) | 11283rd | |
| Sophie germain primes | 5304th | |
| Twin primes (1st member) | 5633rd | |
| Roman numberals | ||
| Base 2 | 100111000011010111112 | 100111000100100101112 |
| Base 3 | 10121112002023 | 10121120100223 |
| Base 4 | 21300311334 | 21301021134 |
| Base 5 | 1304333245 | 1304411015 |
| Base 6 | 214141156 | 214153556 |
| Base 7 | 53032647 | 53042217 |
| Base 8 | 23415378 | 23422278 |
| Base 9 | 11746229 | 11751089 |
| Base 10 | 63983910 | 64015110 |
| Base 11 | 3a77a211 | 3a7a5611 |
| Base 12 | 26a33b12 | 26a55b12 |
| Base 13 | 19530513 | 1954b513 |
| Base 14 | 12926b14 | 12941114 |
| Base 15 | c98ae15 | c9a1b15 |
| Base 16 | 9c35f16 | 9c49716 |