Compare 128 vs 137
| Property | 128 | 137 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 1 | 1 |
| Total factors | 7 | 1 |
| Prime factorization | 27 | 1371 |
| Prime factorization | 2 × 2 × 2 × 2 × 2 × 2 × 2 | 137 |
| Divisors count | 8 | 2 |
| Divisors | 1, 2, 4, 8, 16, 32, 64, 128 | 1, 137 |
| Number of properties | 0 | 8 |
| Additive primes | 18th | |
| Chen primes | 27th | |
| Left-truncatable primes | 17th | |
| Primes | 33rd | |
| Pythagorean primes | 15th | |
| Sexy primes (2nd member) | 20th | |
| Solinas primes | 24th | |
| Twin primes (1st member) | 11th | |
| Roman numberals | CXXVIII | CXXXVII |
| Base 2 | 100000002 | 100010012 |
| Base 3 | 112023 | 120023 |
| Base 4 | 20004 | 20214 |
| Base 5 | 10035 | 10225 |
| Base 6 | 3326 | 3456 |
| Base 7 | 2427 | 2547 |
| Base 8 | 2008 | 2118 |
| Base 9 | 1529 | 1629 |
| Base 10 | 12810 | 13710 |
| Base 11 | 10711 | 11511 |
| Base 12 | a812 | b512 |
| Base 13 | 9b13 | a713 |
| Base 14 | 9214 | 9b14 |
| Base 15 | 8815 | 9215 |
| Base 16 | 8016 | 8916 |