Compare 18181 vs 18661
| Property | 18181 | 18661 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 181811 | 186611 |
| Prime factorization | 18181 | 18661 |
| Divisors count | 2 | 2 |
| Divisors | 1, 18181 | 1, 18661 |
| Number of properties | 9 | 7 |
| Additive primes | 979th | |
| Chen primes | 1054th | |
| Dihedral primes | 8th | |
| Harmonic primes | 754th | |
| Isolated primes | 1444th | 1482nd |
| Long primes | 816th | |
| Lucky primes | 341st | 348th |
| Palindromic primes | 42nd | |
| Primes | 2083rd | 2131st |
| Pythagorean primes | 1029th | 1057th |
| Super primes | 314th | 321st |
| Roman numberals | ||
| Base 2 | 1000111000001012 | 1001000111001012 |
| Base 3 | 2202211013 | 2211210113 |
| Base 4 | 101300114 | 102032114 |
| Base 5 | 10402115 | 10441215 |
| Base 6 | 2201016 | 2222216 |
| Base 7 | 1040027 | 1052567 |
| Base 8 | 434058 | 443458 |
| Base 9 | 268419 | 275349 |
| Base 10 | 1818110 | 1866110 |
| Base 11 | 1272911 | 1302511 |
| Base 12 | a63112 | a97112 |
| Base 13 | 837713 | 865613 |
| Base 14 | 68a914 | 6b2d14 |
| Base 15 | 55c115 | 57e115 |
| Base 16 | 470516 | 48e516 |