Compare 18181 vs 18397
| Property | 18181 | 18397 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 181811 | 183971 |
| Prime factorization | 18181 | 18397 |
| Divisors count | 2 | 2 |
| Divisors | 1, 18181 | 1, 18397 |
| Number of properties | 9 | 7 |
| Additive primes | 979th | |
| Centered heptagonal primes | 20th | |
| Chen primes | 1043rd | |
| Cousin primes (1st member) | 329th | |
| Dihedral primes | 8th | |
| Harmonic primes | 754th | |
| Isolated primes | 1444th | 1462nd |
| Lucky primes | 341st | 344th |
| Palindromic primes | 42nd | |
| Primes | 2083rd | 2107th |
| Pythagorean primes | 1029th | 1042nd |
| Super primes | 314th | |
| Roman numberals | ||
| Base 2 | 1000111000001012 | 1000111110111012 |
| Base 3 | 2202211013 | 2210201013 |
| Base 4 | 101300114 | 101331314 |
| Base 5 | 10402115 | 10420425 |
| Base 6 | 2201016 | 2211016 |
| Base 7 | 1040027 | 1044317 |
| Base 8 | 434058 | 437358 |
| Base 9 | 268419 | 272119 |
| Base 10 | 1818110 | 1839710 |
| Base 11 | 1272911 | 1290511 |
| Base 12 | a63112 | a79112 |
| Base 13 | 837713 | 84b213 |
| Base 14 | 68a914 | 69c114 |
| Base 15 | 55c115 | 56b715 |
| Base 16 | 470516 | 47dd16 |