Compare 18143 vs 18155
| Property | 18143 | 18155 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 181431 | 51 × 36311 |
| Prime factorization | 18143 | 5 × 3631 |
| Divisors count | 2 | 4 |
| Divisors | 1, 18143 | 1, 5, 3631, 18155 |
| Number of properties | 6 | 1 |
| Additive primes | 977th | |
| Happy primes | 356th | |
| Isolated primes | 1441st | |
| Long primes | 798th | |
| Primes | 2080th | |
| Semiprimes | 4625th | |
| Sexy primes (1st member) | 642nd | |
| Roman numberals | ||
| Base 2 | 1000110110111112 | 1000110111010112 |
| Base 3 | 2202122223 | 2202201023 |
| Base 4 | 101231334 | 101232234 |
| Base 5 | 10400335 | 10401105 |
| Base 6 | 2155556 | 2200156 |
| Base 7 | 1036167 | 1036347 |
| Base 8 | 433378 | 433538 |
| Base 9 | 267889 | 268129 |
| Base 10 | 1814310 | 1815510 |
| Base 11 | 126a411 | 1270511 |
| Base 12 | a5bb12 | a60b12 |
| Base 13 | 834813 | 835713 |
| Base 14 | 687d14 | 688b14 |
| Base 15 | 559815 | 55a515 |
| Base 16 | 46df16 | 46eb16 |