Compare 131 vs 409
| Property | 131 | 409 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 1311 | 4091 |
| Prime factorization | 131 | 409 |
| Divisors count | 2 | 2 |
| Divisors | 1, 131 | 1, 409 |
| Number of properties | 12 | 9 |
| Additive primes | 17th | 47th |
| Centered triangular primes | 5th | |
| Chen primes | 26th | 57th |
| Cousin primes (2nd member) | 12th | |
| Happy primes | 22nd | |
| Isolated primes | 13th | 39th |
| Long primes | 12th | |
| Lucky primes | 22nd | |
| Multiplicative primes | 10th | |
| Palindromic primes | 7th | |
| Primes | 32nd | 80th |
| Pythagorean primes | 39th | |
| Sexy primes (1st member) | 20th | |
| Solinas primes | 23rd | |
| Sophie germain primes | 12th | |
| Ulam primes | 8th | 11th |
| Roman numberals | CXXXI | CDIX |
| Base 2 | 100000112 | 1100110012 |
| Base 3 | 112123 | 1200113 |
| Base 4 | 20034 | 121214 |
| Base 5 | 10115 | 31145 |
| Base 6 | 3356 | 15216 |
| Base 7 | 2457 | 11237 |
| Base 8 | 2038 | 6318 |
| Base 9 | 1559 | 5049 |
| Base 10 | 13110 | 40910 |
| Base 11 | 10a11 | 34211 |
| Base 12 | ab12 | 2a112 |
| Base 13 | a113 | 25613 |
| Base 14 | 9514 | 21314 |
| Base 15 | 8b15 | 1c415 |
| Base 16 | 8316 | 19916 |