Compare 18397 vs 18661
| Property | 18397 | 18661 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 183971 | 186611 |
| Prime factorization | 18397 | 18661 |
| Divisors count | 2 | 2 |
| Divisors | 1, 18397 | 1, 18661 |
| Number of properties | 7 | 7 |
| Centered heptagonal primes | 20th | |
| Chen primes | 1043rd | 1054th |
| Cousin primes (1st member) | 329th | |
| Isolated primes | 1462nd | 1482nd |
| Long primes | 816th | |
| Lucky primes | 344th | 348th |
| Primes | 2107th | 2131st |
| Pythagorean primes | 1042nd | 1057th |
| Super primes | 321st | |
| Roman numberals | ||
| Base 2 | 1000111110111012 | 1001000111001012 |
| Base 3 | 2210201013 | 2211210113 |
| Base 4 | 101331314 | 102032114 |
| Base 5 | 10420425 | 10441215 |
| Base 6 | 2211016 | 2222216 |
| Base 7 | 1044317 | 1052567 |
| Base 8 | 437358 | 443458 |
| Base 9 | 272119 | 275349 |
| Base 10 | 1839710 | 1866110 |
| Base 11 | 1290511 | 1302511 |
| Base 12 | a79112 | a97112 |
| Base 13 | 84b213 | 865613 |
| Base 14 | 69c114 | 6b2d14 |
| Base 15 | 56b715 | 57e115 |
| Base 16 | 47dd16 | 48e516 |