Compare 18945 vs 18947
| Property | 18945 | 18947 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 4 | 1 |
| Prime factorization | 32 × 51 × 4211 | 189471 |
| Prime factorization | 3 × 3 × 5 × 421 | 18947 |
| Divisors count | 12 | 2 |
| Divisors | 1, 3, 5, 9, 15, 45, 421, 1263, 2105, 3789, 6315, 18945 | 1, 18947 |
| Number of properties | 0 | 5 |
| Additive primes | 1007th | |
| Chen primes | 1068th | |
| Isolated primes | 1502nd | |
| Primes | 2155th | |
| Safe primes | 185th | |
| Roman numberals | ||
| Base 2 | 1001010000000012 | 1001010000000112 |
| Base 3 | 2212222003 | 2212222023 |
| Base 4 | 102200014 | 102200034 |
| Base 5 | 11012405 | 11012425 |
| Base 6 | 2234136 | 2234156 |
| Base 7 | 1061437 | 1061457 |
| Base 8 | 450018 | 450038 |
| Base 9 | 278809 | 278829 |
| Base 10 | 1894510 | 1894710 |
| Base 11 | 1326311 | 1326511 |
| Base 12 | ab6912 | ab6b12 |
| Base 13 | 881413 | 881613 |
| Base 14 | 6c9314 | 6c9514 |
| Base 15 | 593015 | 593215 |
| Base 16 | 4a0116 | 4a0316 |