Compare 149 vs 389
| Property | 149 | 389 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 1491 | 3891 |
| Prime factorization | 149 | 389 |
| Divisors count | 2 | 2 |
| Divisors | 1, 149 | 1, 389 |
| Number of properties | 8 | 7 |
| Chen primes | 29th | 55th |
| Emirps | 11th | 20th |
| Good primes | 14th | |
| Harmonic primes | 12th | |
| Isolated primes | 36th | |
| Long primes | 13th | 29th |
| Primes | 35th | 77th |
| Pythagorean primes | 16th | 36th |
| Sexy primes (2nd member) | 42nd | |
| Twin primes (1st member) | 12th | |
| Roman numberals | CXLIX | CCCLXXXIX |
| Base 2 | 100101012 | 1100001012 |
| Base 3 | 121123 | 1121023 |
| Base 4 | 21114 | 120114 |
| Base 5 | 10445 | 30245 |
| Base 6 | 4056 | 14456 |
| Base 7 | 3027 | 10647 |
| Base 8 | 2258 | 6058 |
| Base 9 | 1759 | 4729 |
| Base 10 | 14910 | 38910 |
| Base 11 | 12611 | 32411 |
| Base 12 | 10512 | 28512 |
| Base 13 | b613 | 23c13 |
| Base 14 | a914 | 1db14 |
| Base 15 | 9e15 | 1ae15 |
| Base 16 | 9516 | 18516 |