Compare 61 vs 131
| Property | 61 | 131 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 611 | 1311 |
| Prime factorization | 61 | 131 |
| Divisors count | 2 | 2 |
| Divisors | 1, 61 | 1, 131 |
| Number of properties | 12 | 12 |
| Additive primes | 11th | 17th |
| Centered decagonal primes | 3rd | |
| Centered square primes | 4th | |
| Chen primes | 26th | |
| Cousin primes (2nd member) | 12th | |
| Cuban primes 1 | 4th | |
| Isolated primes | 13th | |
| Long primes | 8th | 12th |
| Multiplicative primes | 10th | |
| Palindromic primes | 7th | |
| Primes | 18th | 32nd |
| Pythagorean primes | 8th | |
| Sexy primes (1st member) | 12th | 20th |
| Sexy prime quadrupletss (1st member) | 4th | |
| Sexy prime triplets (1st member) | 8th | |
| Solinas primes | 15th | 23rd |
| Sophie germain primes | 12th | |
| Twin primes (2nd member) | 7th | |
| Ulam primes | 8th | |
| Roman numberals | LXI | CXXXI |
| Base 2 | 1111012 | 100000112 |
| Base 3 | 20213 | 112123 |
| Base 4 | 3314 | 20034 |
| Base 5 | 2215 | 10115 |
| Base 6 | 1416 | 3356 |
| Base 7 | 1157 | 2457 |
| Base 8 | 758 | 2038 |
| Base 9 | 679 | 1559 |
| Base 10 | 6110 | 13110 |
| Base 11 | 5611 | 10a11 |
| Base 12 | 5112 | ab12 |
| Base 13 | 4913 | a113 |
| Base 14 | 4514 | 9514 |
| Base 15 | 4115 | 8b15 |
| Base 16 | 3d16 | 8316 |