Compare 137 vs 138
| Property | 137 | 138 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 3 |
| Prime factorization | 1371 | 21 × 31 × 231 |
| Prime factorization | 137 | 2 × 3 × 23 |
| Divisors count | 2 | 8 |
| Divisors | 1, 137 | 1, 2, 3, 6, 23, 46, 69, 138 |
| Number of properties | 8 | 0 |
| 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 | CXXXVII | CXXXVIII |
| Base 2 | 100010012 | 100010102 |
| Base 3 | 120023 | 120103 |
| Base 4 | 20214 | 20224 |
| Base 5 | 10225 | 10235 |
| Base 6 | 3456 | 3506 |
| Base 7 | 2547 | 2557 |
| Base 8 | 2118 | 2128 |
| Base 9 | 1629 | 1639 |
| Base 10 | 13710 | 13810 |
| Base 11 | 11511 | 11611 |
| Base 12 | b512 | b612 |
| Base 13 | a713 | a813 |
| Base 14 | 9b14 | 9c14 |
| Base 15 | 9215 | 9315 |
| Base 16 | 8916 | 8a16 |