Compare 137 vs 143
| Property | 137 | 143 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 1371 | 111 × 131 |
| Prime factorization | 137 | 11 × 13 |
| Divisors count | 2 | 4 |
| Divisors | 1, 137 | 1, 11, 13, 143 |
| Number of properties | 8 | 1 |
| Additive primes | 18th | |
| Chen primes | 27th | |
| Left-truncatable primes | 17th | |
| Primes | 33rd | |
| Pythagorean primes | 15th | |
| Semiprimes | 48th | |
| Sexy primes (2nd member) | 20th | |
| Solinas primes | 24th | |
| Twin primes (1st member) | 11th | |
| Roman numberals | CXXXVII | CXLIII |
| Base 2 | 100010012 | 100011112 |
| Base 3 | 120023 | 120223 |
| Base 4 | 20214 | 20334 |
| Base 5 | 10225 | 10335 |
| Base 6 | 3456 | 3556 |
| Base 7 | 2547 | 2637 |
| Base 8 | 2118 | 2178 |
| Base 9 | 1629 | 1689 |
| Base 10 | 13710 | 14310 |
| Base 11 | 11511 | 12011 |
| Base 12 | b512 | bb12 |
| Base 13 | a713 | b013 |
| Base 14 | 9b14 | a314 |
| Base 15 | 9215 | 9815 |
| Base 16 | 8916 | 8f16 |