Compare 18121 vs 18191
| Property | 18121 | 18191 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 181211 | 181911 |
| Prime factorization | 18121 | 18191 |
| Divisors count | 2 | 2 |
| Divisors | 1, 18121 | 1, 18191 |
| Number of properties | 7 | 4 |
| Additive primes | 975th | |
| Emirps | 562nd | |
| Harmonic primes | 751st | |
| Isolated primes | 1445th | |
| Primes | 2076th | 2084th |
| Pythagorean primes | 1025th | |
| Sexy primes (1st member) | 640th | |
| Sexy prime triplets (1st member) | 178th | |
| Sophie germain primes | 303rd | |
| Twin primes (2nd member) | 319th | |
| Roman numberals | ||
| Base 2 | 1000110110010012 | 1000111000011112 |
| Base 3 | 2202120113 | 2202212023 |
| Base 4 | 101230214 | 101300334 |
| Base 5 | 10344415 | 10402315 |
| Base 6 | 2155216 | 2201156 |
| Base 7 | 1035557 | 1040157 |
| Base 8 | 433118 | 434178 |
| Base 9 | 267649 | 268529 |
| Base 10 | 1812110 | 1819110 |
| Base 11 | 1268411 | 1273811 |
| Base 12 | a5a112 | a63b12 |
| Base 13 | 832c13 | 838413 |
| Base 14 | 686514 | 68b514 |
| Base 15 | 558115 | 55cb15 |
| Base 16 | 46c916 | 470f16 |