Compare 149 vs 331
| Property | 149 | 331 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 1491 | 3311 |
| Prime factorization | 149 | 331 |
| Divisors count | 2 | 2 |
| Divisors | 1, 149 | 1, 331 |
| Number of properties | 8 | 10 |
| Additive primes | 39th | |
| Chen primes | 29th | |
| Cuban primes 1 | 7th | |
| Emirps | 11th | |
| Good primes | 14th | 24th |
| Happy primes | 17th | |
| Harmonic primes | 12th | 28th |
| Isolated primes | 28th | |
| Long primes | 13th | |
| Lucky primes | 19th | |
| Primes | 35th | 67th |
| Pythagorean primes | 16th | |
| Sexy primes (1st member) | 37th | |
| Super primes | 19th | |
| Twin primes (1st member) | 12th | |
| Roman numberals | CXLIX | CCCXXXI |
| Base 2 | 100101012 | 1010010112 |
| Base 3 | 121123 | 1100213 |
| Base 4 | 21114 | 110234 |
| Base 5 | 10445 | 23115 |
| Base 6 | 4056 | 13116 |
| Base 7 | 3027 | 6527 |
| Base 8 | 2258 | 5138 |
| Base 9 | 1759 | 4079 |
| Base 10 | 14910 | 33110 |
| Base 11 | 12611 | 28111 |
| Base 12 | 10512 | 23712 |
| Base 13 | b613 | 1c613 |
| Base 14 | a914 | 19914 |
| Base 15 | 9e15 | 17115 |
| Base 16 | 9516 | 14b16 |