Compare 155 vs 167
| Property | 155 | 167 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 51 × 311 | 1671 |
| Prime factorization | 5 × 31 | 167 |
| Divisors count | 4 | 2 |
| Divisors | 1, 5, 31, 155 | 1, 167 |
| Number of properties | 1 | 11 |
| Chen primes | 31st | |
| Cousin primes (2nd member) | 13th | |
| Emirps | 13th | |
| Happy primes | 11th | |
| Isolated primes | 16th | |
| Left-truncatable primes | 18th | |
| Long primes | 14th | |
| Primes | 39th | |
| Safe primes | 9th | |
| Semiprimes | 51st | |
| Sexy primes (1st member) | 23rd | |
| Sexy prime triplets (1st member) | 13th | |
| Roman numberals | CLV | CLXVII |
| Base 2 | 100110112 | 101001112 |
| Base 3 | 122023 | 200123 |
| Base 4 | 21234 | 22134 |
| Base 5 | 11105 | 11325 |
| Base 6 | 4156 | 4356 |
| Base 7 | 3117 | 3267 |
| Base 8 | 2338 | 2478 |
| Base 9 | 1829 | 2059 |
| Base 10 | 15510 | 16710 |
| Base 11 | 13111 | 14211 |
| Base 12 | 10b12 | 11b12 |
| Base 13 | bc13 | cb13 |
| Base 14 | b114 | bd14 |
| Base 15 | a515 | b215 |
| Base 16 | 9b16 | a716 |