Compare 131 vs 1511
| Property | 131 | 1511 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 1311 | 15111 |
| Prime factorization | 131 | 1511 |
| Divisors count | 2 | 2 |
| Divisors | 1, 131 | 1, 1511 |
| Number of properties | 12 | 7 |
| Additive primes | 17th | |
| Chen primes | 26th | 155th |
| Cousin primes (2nd member) | 12th | |
| Emirps | 73rd | |
| Happy primes | 48th | |
| Isolated primes | 13th | 141st |
| Long primes | 12th | |
| Multiplicative primes | 10th | 17th |
| Palindromic primes | 7th | |
| Primes | 32nd | 240th |
| Sexy primes (1st member) | 20th | |
| Solinas primes | 23rd | |
| Sophie germain primes | 12th | 51st |
| Ulam primes | 8th | |
| Roman numberals | CXXXI | MDXI |
| Base 2 | 100000112 | 101111001112 |
| Base 3 | 112123 | 20012223 |
| Base 4 | 20034 | 1132134 |
| Base 5 | 10115 | 220215 |
| Base 6 | 3356 | 105556 |
| Base 7 | 2457 | 42567 |
| Base 8 | 2038 | 27478 |
| Base 9 | 1559 | 20589 |
| Base 10 | 13110 | 151110 |
| Base 11 | 10a11 | 115411 |
| Base 12 | ab12 | a5b12 |
| Base 13 | a113 | 8c313 |
| Base 14 | 9514 | 79d14 |
| Base 15 | 8b15 | 6ab15 |
| Base 16 | 8316 | 5e716 |