Compare 139 vs 181
| Property | 139 | 181 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 1391 | 1811 |
| Prime factorization | 139 | 181 |
| Divisors count | 2 | 2 |
| Divisors | 1, 139 | 1, 181 |
| Number of properties | 6 | 8 |
| Additive primes | 19th | |
| Centered square primes | 6th | |
| Chen primes | 28th | 33rd |
| Dihedral primes | 5th | |
| Happy primes | 10th | |
| Harmonic primes | 11th | |
| Long primes | 16th | |
| Palindromic primes | 9th | |
| Primes | 34th | 42nd |
| Pythagorean primes | 19th | |
| Twin primes (2nd member) | 11th | 13th |
| Roman numberals | CXXXIX | CLXXXI |
| Base 2 | 100010112 | 101101012 |
| Base 3 | 120113 | 202013 |
| Base 4 | 20234 | 23114 |
| Base 5 | 10245 | 12115 |
| Base 6 | 3516 | 5016 |
| Base 7 | 2567 | 3467 |
| Base 8 | 2138 | 2658 |
| Base 9 | 1649 | 2219 |
| Base 10 | 13910 | 18110 |
| Base 11 | 11711 | 15511 |
| Base 12 | b712 | 13112 |
| Base 13 | a913 | 10c13 |
| Base 14 | 9d14 | cd14 |
| Base 15 | 9415 | c115 |
| Base 16 | 8b16 | b516 |