Compare 137 vs 181
| Property | 137 | 181 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 1371 | 1811 |
| Prime factorization | 137 | 181 |
| Divisors count | 2 | 2 |
| Divisors | 1, 137 | 1, 181 |
| Number of properties | 8 | 8 |
| Additive primes | 18th | |
| Centered square primes | 6th | |
| Chen primes | 27th | 33rd |
| Dihedral primes | 5th | |
| Left-truncatable primes | 17th | |
| Long primes | 16th | |
| Palindromic primes | 9th | |
| Primes | 33rd | 42nd |
| Pythagorean primes | 15th | 19th |
| Sexy primes (2nd member) | 20th | |
| Solinas primes | 24th | |
| Twin primes (1st member) | 11th | |
| Twin primes (2nd member) | 13th | |
| Roman numberals | CXXXVII | CLXXXI |
| Base 2 | 100010012 | 101101012 |
| Base 3 | 120023 | 202013 |
| Base 4 | 20214 | 23114 |
| Base 5 | 10225 | 12115 |
| Base 6 | 3456 | 5016 |
| Base 7 | 2547 | 3467 |
| Base 8 | 2118 | 2658 |
| Base 9 | 1629 | 2219 |
| Base 10 | 13710 | 18110 |
| Base 11 | 11511 | 15511 |
| Base 12 | b512 | 13112 |
| Base 13 | a713 | 10c13 |
| Base 14 | 9b14 | cd14 |
| Base 15 | 9215 | c115 |
| Base 16 | 8916 | b516 |