Compare 165887 vs 166021
| Property | 165887 | 166021 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 1658871 | 1660211 |
| Prime factorization | 165887 | 166021 |
| Divisors count | 2 | 2 |
| Divisors | 1, 165887 | 1, 166021 |
| Number of properties | 9 | 6 |
| Chen primes | 6449th | |
| Class 1+ primes | 35th | |
| Cousin primes (2nd member) | 1828th | |
| Emirps | 3359th | 3362nd |
| Happy primes | 2351st | |
| Harmonic primes | 5696th | |
| Isolated primes | 11462nd | 11470th |
| Long primes | 5664th | |
| Pierpont primes of the 2nd kind | 35th | |
| Primes | 15167th | 15175th |
| Pythagorean primes | 7569th | |
| Sexy primes (1st member) | 3672nd | |
| Roman numberals | ||
| Base 2 | 1010000111111111112 | 1010001000100001012 |
| Base 3 | 221021122223 | 221022012213 |
| Base 4 | 2201333334 | 2202020114 |
| Base 5 | 203020225 | 203030415 |
| Base 6 | 33155556 | 33203416 |
| Base 7 | 12604317 | 12610127 |
| Base 8 | 5037778 | 5042058 |
| Base 9 | 2724889 | 2726579 |
| Base 10 | 16588710 | 16602110 |
| Base 11 | 1036a711 | 10380911 |
| Base 12 | 7bbbb12 | 800b112 |
| Base 13 | 5a67713 | 5a74b13 |
| Base 14 | 4465114 | 4470914 |
| Base 15 | 3424215 | 342d115 |
| Base 16 | 287ff16 | 2888516 |