Compare 1577 vs 1579
| Property | 1577 | 1579 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 191 × 831 | 15791 |
| Prime factorization | 19 × 83 | 1579 |
| Divisors count | 4 | 2 |
| Divisors | 1, 19, 83, 1577 | 1, 1579 |
| Number of properties | 1 | 6 |
| Cousin primes (1st member) | 56th | |
| Harmonic primes | 83rd | |
| Isolated primes | 150th | |
| Long primes | 97th | |
| Lucky primes | 60th | |
| Primes | 249th | |
| Semiprimes | 458th | |
| Roman numberals | MDLXXVII | MDLXXIX |
| Base 2 | 110001010012 | 110001010112 |
| Base 3 | 20111023 | 20111113 |
| Base 4 | 1202214 | 1202234 |
| Base 5 | 223025 | 223045 |
| Base 6 | 111456 | 111516 |
| Base 7 | 44127 | 44147 |
| Base 8 | 30518 | 30538 |
| Base 9 | 21429 | 21449 |
| Base 10 | 157710 | 157910 |
| Base 11 | 120411 | 120611 |
| Base 12 | ab512 | ab712 |
| Base 13 | 94413 | 94613 |
| Base 14 | 80914 | 80b14 |
| Base 15 | 70215 | 70415 |
| Base 16 | 62916 | 62b16 |