Compare 149 vs 154
| Property | 149 | 154 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 3 |
| Prime factorization | 1491 | 21 × 71 × 111 |
| Prime factorization | 149 | 2 × 7 × 11 |
| Divisors count | 2 | 8 |
| Divisors | 1, 149 | 1, 2, 7, 11, 14, 22, 77, 154 |
| Number of properties | 8 | 0 |
| Chen primes | 29th | |
| Emirps | 11th | |
| Good primes | 14th | |
| Harmonic primes | 12th | |
| Long primes | 13th | |
| Primes | 35th | |
| Pythagorean primes | 16th | |
| Twin primes (1st member) | 12th | |
| Roman numberals | CXLIX | CLIV |
| Base 2 | 100101012 | 100110102 |
| Base 3 | 121123 | 122013 |
| Base 4 | 21114 | 21224 |
| Base 5 | 10445 | 11045 |
| Base 6 | 4056 | 4146 |
| Base 7 | 3027 | 3107 |
| Base 8 | 2258 | 2328 |
| Base 9 | 1759 | 1819 |
| Base 10 | 14910 | 15410 |
| Base 11 | 12611 | 13011 |
| Base 12 | 10512 | 10a12 |
| Base 13 | b613 | bb13 |
| Base 14 | a914 | b014 |
| Base 15 | 9e15 | a415 |
| Base 16 | 9516 | 9a16 |