Compare 1531 vs 1579
| Property | 1531 | 1579 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 15311 | 15791 |
| Prime factorization | 1531 | 1579 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1531 | 1, 1579 |
| Number of properties | 5 | 6 |
| Centered decagonal primes | 13th | |
| Cousin primes (1st member) | 56th | |
| Harmonic primes | 83rd | |
| Isolated primes | 143rd | 150th |
| Long primes | 91st | 97th |
| Lucky primes | 60th | |
| Primes | 242nd | 249th |
| Ulam primes | 22nd | |
| Roman numberals | MDXXXI | MDLXXIX |
| Base 2 | 101111110112 | 110001010112 |
| Base 3 | 20022013 | 20111113 |
| Base 4 | 1133234 | 1202234 |
| Base 5 | 221115 | 223045 |
| Base 6 | 110316 | 111516 |
| Base 7 | 43157 | 44147 |
| Base 8 | 27738 | 30538 |
| Base 9 | 20819 | 21449 |
| Base 10 | 153110 | 157910 |
| Base 11 | 117211 | 120611 |
| Base 12 | a7712 | ab712 |
| Base 13 | 90a13 | 94613 |
| Base 14 | 7b514 | 80b14 |
| Base 15 | 6c115 | 70415 |
| Base 16 | 5fb16 | 62b16 |