Compare 18189 vs 18191
| Property | 18189 | 18191 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 4 | 1 |
| Prime factorization | 32 × 431 × 471 | 181911 |
| Prime factorization | 3 × 3 × 43 × 47 | 18191 |
| Divisors count | 12 | 2 |
| Divisors | 1, 3, 9, 43, 47, 129, 141, 387, 423, 2021, 6063, 18189 | 1, 18191 |
| Number of properties | 0 | 4 |
| Emirps | 562nd | |
| Isolated primes | 1445th | |
| Primes | 2084th | |
| Sophie germain primes | 303rd | |
| Roman numberals | ||
| Base 2 | 1000111000011012 | 1000111000011112 |
| Base 3 | 2202212003 | 2202212023 |
| Base 4 | 101300314 | 101300334 |
| Base 5 | 10402245 | 10402315 |
| Base 6 | 2201136 | 2201156 |
| Base 7 | 1040137 | 1040157 |
| Base 8 | 434158 | 434178 |
| Base 9 | 268509 | 268529 |
| Base 10 | 1818910 | 1819110 |
| Base 11 | 1273611 | 1273811 |
| Base 12 | a63912 | a63b12 |
| Base 13 | 838213 | 838413 |
| Base 14 | 68b314 | 68b514 |
| Base 15 | 55c915 | 55cb15 |
| Base 16 | 470d16 | 470f16 |