Compare 18181 vs 120121
| Property | 18181 | 120121 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 181811 | 1201211 |
| Prime factorization | 18181 | 120121 |
| Divisors count | 2 | 2 |
| Divisors | 1, 18181 | 1, 120121 |
| Number of properties | 9 | 6 |
| Additive primes | 979th | 4643rd |
| Dihedral primes | 8th | 12th |
| Emirps | 2208th | |
| Harmonic primes | 754th | |
| Isolated primes | 1444th | 8462nd |
| Lucky primes | 341st | |
| Palindromic primes | 42nd | |
| Primes | 2083rd | 11313th |
| Pythagorean primes | 1029th | 5631st |
| Super primes | 314th | |
| Roman numberals | ||
| Base 2 | 1000111000001012 | 111010101001110012 |
| Base 3 | 2202211013 | 200022022213 |
| Base 4 | 101300114 | 1311103214 |
| Base 5 | 10402115 | 123204415 |
| Base 6 | 2201016 | 23240416 |
| Base 7 | 1040027 | 10101317 |
| Base 8 | 434058 | 3524718 |
| Base 9 | 268419 | 2026879 |
| Base 10 | 1818110 | 12012110 |
| Base 11 | 1272911 | 8228111 |
| Base 12 | a63112 | 5962112 |
| Base 13 | 837713 | 428a113 |
| Base 14 | 68a914 | 31ac114 |
| Base 15 | 55c115 | 258d115 |
| Base 16 | 470516 | 1d53916 |