Compare 167 vs 181
| Property | 167 | 181 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 1671 | 1811 |
| Prime factorization | 167 | 181 |
| Divisors count | 2 | 2 |
| Divisors | 1, 167 | 1, 181 |
| Number of properties | 11 | 8 |
| Centered square primes | 6th | |
| Chen primes | 31st | 33rd |
| Cousin primes (2nd member) | 13th | |
| Dihedral primes | 5th | |
| Emirps | 13th | |
| Happy primes | 11th | |
| Isolated primes | 16th | |
| Left-truncatable primes | 18th | |
| Long primes | 14th | 16th |
| Palindromic primes | 9th | |
| Primes | 39th | 42nd |
| Pythagorean primes | 19th | |
| Safe primes | 9th | |
| Sexy primes (1st member) | 23rd | |
| Sexy prime triplets (1st member) | 13th | |
| Twin primes (2nd member) | 13th | |
| Roman numberals | CLXVII | CLXXXI |
| Base 2 | 101001112 | 101101012 |
| Base 3 | 200123 | 202013 |
| Base 4 | 22134 | 23114 |
| Base 5 | 11325 | 12115 |
| Base 6 | 4356 | 5016 |
| Base 7 | 3267 | 3467 |
| Base 8 | 2478 | 2658 |
| Base 9 | 2059 | 2219 |
| Base 10 | 16710 | 18110 |
| Base 11 | 14211 | 15511 |
| Base 12 | 11b12 | 13112 |
| Base 13 | cb13 | 10c13 |
| Base 14 | bd14 | cd14 |
| Base 15 | b215 | c115 |
| Base 16 | a716 | b516 |