Compare 149 vs 257
| Property | 149 | 257 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 1491 | 2571 |
| Prime factorization | 149 | 257 |
| Divisors count | 2 | 2 |
| Divisors | 1, 149 | 1, 257 |
| Number of properties | 8 | 16 |
| Chen primes | 29th | 42nd |
| Emirps | 11th | |
| Fermat primes | 4th | |
| Good primes | 14th | 20th |
| Harmonic primes | 12th | |
| Isolated primes | 22nd | |
| Long primes | 13th | 21st |
| Pierpont primes | 14th | |
| Primes | 35th | 55th |
| Proth primes | 10th | |
| Pythagorean primes | 16th | 25th |
| Quartan primes | 4th | |
| Sexy primes (1st member) | 31st | |
| Sexy primes (2nd member) | 30th | |
| Sexy prime quadrupletss (2nd member) | 5th | |
| Sexy prime triplets (1st member) | 16th | |
| Sexy prime triplets (2nd member) | 15th | |
| Solinas primes | 31st | |
| Twin primes (1st member) | 12th | |
| Roman numberals | CXLIX | CCLVII |
| Base 2 | 100101012 | 1000000012 |
| Base 3 | 121123 | 1001123 |
| Base 4 | 21114 | 100014 |
| Base 5 | 10445 | 20125 |
| Base 6 | 4056 | 11056 |
| Base 7 | 3027 | 5157 |
| Base 8 | 2258 | 4018 |
| Base 9 | 1759 | 3159 |
| Base 10 | 14910 | 25710 |
| Base 11 | 12611 | 21411 |
| Base 12 | 10512 | 19512 |
| Base 13 | b613 | 16a13 |
| Base 14 | a914 | 14514 |
| Base 15 | 9e15 | 12215 |
| Base 16 | 9516 | 10116 |