Compare 1563 vs 1571
| Property | 1563 | 1571 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 31 × 5211 | 15711 |
| Prime factorization | 3 × 521 | 1571 |
| Divisors count | 4 | 2 |
| Divisors | 1, 3, 521, 1563 | 1, 1571 |
| Number of properties | 1 | 4 |
| Cousin primes (2nd member) | 55th | |
| Isolated primes | 149th | |
| Long primes | 96th | |
| Primes | 248th | |
| Semiprimes | 454th | |
| Roman numberals | MDLXIII | MDLXXI |
| Base 2 | 110000110112 | 110001000112 |
| Base 3 | 20102203 | 20110123 |
| Base 4 | 1201234 | 1202034 |
| Base 5 | 222235 | 222415 |
| Base 6 | 111236 | 111356 |
| Base 7 | 43627 | 44037 |
| Base 8 | 30338 | 30438 |
| Base 9 | 21269 | 21359 |
| Base 10 | 156310 | 157110 |
| Base 11 | 11a111 | 11a911 |
| Base 12 | aa312 | aab12 |
| Base 13 | 93313 | 93b13 |
| Base 14 | 7d914 | 80314 |
| Base 15 | 6e315 | 6eb15 |
| Base 16 | 61b16 | 62316 |