Compare 149 vs 431
| Property | 149 | 431 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 1491 | 4311 |
| Prime factorization | 149 | 431 |
| Divisors count | 2 | 2 |
| Divisors | 1, 149 | 1, 431 |
| Number of properties | 8 | 10 |
| Chen primes | 29th | 59th |
| Class 1+ primes | 16th | |
| Emirps | 11th | |
| Good primes | 14th | 27th |
| Harmonic primes | 12th | 31st |
| Long primes | 13th | |
| Pierpont primes of the 2nd kind | 16th | |
| Primes | 35th | 83rd |
| Pythagorean primes | 16th | |
| Sophie germain primes | 23rd | |
| Super primes | 23rd | |
| Twin primes (1st member) | 12th | 23rd |
| Ulam primes | 12th | |
| Roman numberals | CXLIX | CDXXXI |
| Base 2 | 100101012 | 1101011112 |
| Base 3 | 121123 | 1202223 |
| Base 4 | 21114 | 122334 |
| Base 5 | 10445 | 32115 |
| Base 6 | 4056 | 15556 |
| Base 7 | 3027 | 11547 |
| Base 8 | 2258 | 6578 |
| Base 9 | 1759 | 5289 |
| Base 10 | 14910 | 43110 |
| Base 11 | 12611 | 36211 |
| Base 12 | 10512 | 2bb12 |
| Base 13 | b613 | 27213 |
| Base 14 | a914 | 22b14 |
| Base 15 | 9e15 | 1db15 |
| Base 16 | 9516 | 1af16 |