Compare 18391 vs 18401
| Property | 18391 | 18401 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 531 × 3471 | 184011 |
| Prime factorization | 53 × 347 | 18401 |
| Divisors count | 4 | 2 |
| Divisors | 1, 53, 347, 18391 | 1, 18401 |
| Number of properties | 1 | 5 |
| Cousin primes (2nd member) | 329th | |
| Happy primes | 360th | |
| Isolated primes | 1463rd | |
| Primes | 2108th | |
| Pythagorean primes | 1043rd | |
| Semiprimes | 4678th | |
| Roman numberals | ||
| Base 2 | 1000111110101112 | 1000111111000012 |
| Base 3 | 2210200113 | 2210201123 |
| Base 4 | 101331134 | 101332014 |
| Base 5 | 10420315 | 10421015 |
| Base 6 | 2210516 | 2211056 |
| Base 7 | 1044227 | 1044357 |
| Base 8 | 437278 | 437418 |
| Base 9 | 272049 | 272159 |
| Base 10 | 1839110 | 1840110 |
| Base 11 | 128aa11 | 1290911 |
| Base 12 | a78712 | a79512 |
| Base 13 | 84a913 | 84b613 |
| Base 14 | 69b914 | 69c514 |
| Base 15 | 56b115 | 56bb15 |
| Base 16 | 47d716 | 47e116 |