Compare 158 vs 163
| Property | 158 | 163 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 21 × 791 | 1631 |
| Prime factorization | 2 × 79 | 163 |
| Divisors count | 4 | 2 |
| Divisors | 1, 2, 79, 158 | 1, 163 |
| Number of properties | 1 | 7 |
| Cousin primes (1st member) | 13th | |
| Isolated primes | 15th | |
| Lucky primes | 12th | |
| Pierpont primes | 12th | |
| Primes | 38th | |
| Semiprimes | 52nd | |
| Sexy primes (2nd member) | 22nd | |
| Sexy prime triplets (3rd member) | 12th | |
| Roman numberals | CLVIII | CLXIII |
| Base 2 | 100111102 | 101000112 |
| Base 3 | 122123 | 200013 |
| Base 4 | 21324 | 22034 |
| Base 5 | 11135 | 11235 |
| Base 6 | 4226 | 4316 |
| Base 7 | 3147 | 3227 |
| Base 8 | 2368 | 2438 |
| Base 9 | 1859 | 2019 |
| Base 10 | 15810 | 16310 |
| Base 11 | 13411 | 13911 |
| Base 12 | 11212 | 11712 |
| Base 13 | c213 | c713 |
| Base 14 | b414 | b914 |
| Base 15 | a815 | ad15 |
| Base 16 | 9e16 | a316 |