Compare 149 vs 158
| Property | 149 | 158 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 1491 | 21 × 791 |
| Prime factorization | 149 | 2 × 79 |
| Divisors count | 2 | 4 |
| Divisors | 1, 149 | 1, 2, 79, 158 |
| Number of properties | 8 | 1 |
| Chen primes | 29th | |
| Emirps | 11th | |
| Good primes | 14th | |
| Harmonic primes | 12th | |
| Long primes | 13th | |
| Primes | 35th | |
| Pythagorean primes | 16th | |
| Semiprimes | 52nd | |
| Twin primes (1st member) | 12th | |
| Roman numberals | CXLIX | CLVIII |
| Base 2 | 100101012 | 100111102 |
| Base 3 | 121123 | 122123 |
| Base 4 | 21114 | 21324 |
| Base 5 | 10445 | 11135 |
| Base 6 | 4056 | 4226 |
| Base 7 | 3027 | 3147 |
| Base 8 | 2258 | 2368 |
| Base 9 | 1759 | 1859 |
| Base 10 | 14910 | 15810 |
| Base 11 | 12611 | 13411 |
| Base 12 | 10512 | 11212 |
| Base 13 | b613 | c213 |
| Base 14 | a914 | b414 |
| Base 15 | 9e15 | a815 |
| Base 16 | 9516 | 9e16 |