Compare 181 vs 227
| Property | 181 | 227 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 1811 | 2271 |
| Prime factorization | 181 | 227 |
| Divisors count | 2 | 2 |
| Divisors | 1, 181 | 1, 227 |
| Number of properties | 8 | 11 |
| Additive primes | 29th | |
| Centered square primes | 6th | |
| Chen primes | 33rd | 38th |
| Cousin primes (2nd member) | 15th | |
| Dihedral primes | 5th | |
| Good primes | 18th | |
| Long primes | 16th | |
| Palindromic primes | 9th | |
| Primes | 42nd | 49th |
| Prime triplets (1st member) | 16th | |
| Prime triplets (2nd member) | 15th | |
| Pythagorean primes | 19th | |
| Safe primes | 11th | |
| Sexy primes (1st member) | 28th | |
| Sexy prime triplets (1st member) | 14th | |
| Twin primes (1st member) | 16th | |
| Twin primes (2nd member) | 13th | |
| Roman numberals | CLXXXI | CCXXVII |
| Base 2 | 101101012 | 111000112 |
| Base 3 | 202013 | 221023 |
| Base 4 | 23114 | 32034 |
| Base 5 | 12115 | 14025 |
| Base 6 | 5016 | 10156 |
| Base 7 | 3467 | 4437 |
| Base 8 | 2658 | 3438 |
| Base 9 | 2219 | 2729 |
| Base 10 | 18110 | 22710 |
| Base 11 | 15511 | 19711 |
| Base 12 | 13112 | 16b12 |
| Base 13 | 10c13 | 14613 |
| Base 14 | cd14 | 12314 |
| Base 15 | c115 | 10215 |
| Base 16 | b516 | e316 |