Compare 149 vs 181
| Property | 149 | 181 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 1491 | 1811 |
| Prime factorization | 149 | 181 |
| Divisors count | 2 | 2 |
| Divisors | 1, 149 | 1, 181 |
| Number of properties | 8 | 8 |
| Centered square primes | 6th | |
| Chen primes | 29th | 33rd |
| Dihedral primes | 5th | |
| Emirps | 11th | |
| Good primes | 14th | |
| Harmonic primes | 12th | |
| Long primes | 13th | 16th |
| Palindromic primes | 9th | |
| Primes | 35th | 42nd |
| Pythagorean primes | 16th | 19th |
| Twin primes (1st member) | 12th | |
| Twin primes (2nd member) | 13th | |
| Roman numberals | CXLIX | CLXXXI |
| Base 2 | 100101012 | 101101012 |
| Base 3 | 121123 | 202013 |
| Base 4 | 21114 | 23114 |
| Base 5 | 10445 | 12115 |
| Base 6 | 4056 | 5016 |
| Base 7 | 3027 | 3467 |
| Base 8 | 2258 | 2658 |
| Base 9 | 1759 | 2219 |
| Base 10 | 14910 | 18110 |
| Base 11 | 12611 | 15511 |
| Base 12 | 10512 | 13112 |
| Base 13 | b613 | 10c13 |
| Base 14 | a914 | cd14 |
| Base 15 | 9e15 | c115 |
| Base 16 | 9516 | b516 |