Compare 18387 vs 18397
| Property | 18387 | 18397 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 2 | 1 |
| Total factors | 5 | 1 |
| Prime factorization | 34 × 2271 | 183971 |
| Prime factorization | 3 × 3 × 3 × 3 × 227 | 18397 |
| Divisors count | 10 | 2 |
| Divisors | 1, 3, 9, 27, 81, 227, 681, 2043, 6129, 18387 | 1, 18397 |
| Number of properties | 0 | 7 |
| Centered heptagonal primes | 20th | |
| Chen primes | 1043rd | |
| Cousin primes (1st member) | 329th | |
| Isolated primes | 1462nd | |
| Lucky primes | 344th | |
| Primes | 2107th | |
| Pythagorean primes | 1042nd | |
| Roman numberals | ||
| Base 2 | 1000111110100112 | 1000111110111012 |
| Base 3 | 2210200003 | 2210201013 |
| Base 4 | 101331034 | 101331314 |
| Base 5 | 10420225 | 10420425 |
| Base 6 | 2210436 | 2211016 |
| Base 7 | 1044157 | 1044317 |
| Base 8 | 437238 | 437358 |
| Base 9 | 272009 | 272119 |
| Base 10 | 1838710 | 1839710 |
| Base 11 | 128a611 | 1290511 |
| Base 12 | a78312 | a79112 |
| Base 13 | 84a513 | 84b213 |
| Base 14 | 69b514 | 69c114 |
| Base 15 | 56ac15 | 56b715 |
| Base 16 | 47d316 | 47dd16 |