Compare 642739 vs 642809
| Property | 642739 | 642809 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6427391 | 6428091 |
| Prime factorization | 642739 | 642809 |
| Divisors count | 2 | 2 |
| Divisors | 1, 642739 | 1, 642809 |
| Number of properties | 4 | 4 |
| Additive primes | 20429th | 20432nd |
| Isolated primes | 40968th | |
| Primes | 52269th | 52275th |
| Sophie germain primes | 5325th | |
| Twin primes (2nd member) | 5653rd | |
| Ulam primes | 3833rd | |
| Roman numberals | ||
| Base 2 | 100111001110101100112 | 100111001110111110012 |
| Base 3 | 10121222000113 | 10121222022023 |
| Base 4 | 21303223034 | 21303233214 |
| Base 5 | 1310314245 | 1310322145 |
| Base 6 | 214353516 | 214355456 |
| Base 7 | 53146067 | 53150367 |
| Base 8 | 23472638 | 23473718 |
| Base 9 | 11786049 | 11786829 |
| Base 10 | 64273910 | 64280910 |
| Base 11 | 3a999911 | 3a9a5211 |
| Base 12 | 26bb5712 | 26bbb512 |
| Base 13 | 19672613 | 19677b13 |
| Base 14 | 12a33d14 | 12a38d14 |
| Base 15 | ca69415 | ca6de15 |
| Base 16 | 9ceb316 | 9cef916 |