Compare 17981 vs 18899
| Property | 17981 | 18899 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 179811 | 188991 |
| Prime factorization | 17981 | 18899 |
| Divisors count | 2 | 2 |
| Divisors | 1, 17981 | 1, 18899 |
| Number of properties | 7 | 8 |
| Chen primes | 1065th | |
| Cousin primes (2nd member) | 322nd | |
| Emirps | 589th | |
| Good primes | 246th | |
| Happy primes | 367th | |
| Isolated primes | 1435th | 1501st |
| Long primes | 794th | 824th |
| Primes | 2062nd | 2150th |
| Pythagorean primes | 1016th | |
| Sexy primes (1st member) | 637th | |
| Sophie germain primes | 299th | 311th |
| Roman numberals | ||
| Base 2 | 1000110001111012 | 1001001110100112 |
| Base 3 | 2201222223 | 2212202223 |
| Base 4 | 101203314 | 102131034 |
| Base 5 | 10334115 | 11010445 |
| Base 6 | 2151256 | 2232556 |
| Base 7 | 1032657 | 1060467 |
| Base 8 | 430758 | 447238 |
| Base 9 | 265889 | 278289 |
| Base 10 | 1798110 | 1889910 |
| Base 11 | 1256711 | 1322111 |
| Base 12 | a4a512 | ab2b12 |
| Base 13 | 825213 | 87aa13 |
| Base 14 | 67a514 | 6c5d14 |
| Base 15 | 54db15 | 58ee15 |
| Base 16 | 463d16 | 49d316 |