Compare 447 vs 457
| Property | 447 | 457 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 31 × 1491 | 4571 |
| Prime factorization | 3 × 149 | 457 |
| Divisors count | 4 | 2 |
| Divisors | 1, 3, 149, 447 | 1, 457 |
| Number of properties | 1 | 6 |
| Cousin primes (1st member) | 24th | |
| Isolated primes | 43rd | |
| Primes | 88th | |
| Prime triplets (1st member) | 21st | |
| Pythagorean primes | 43rd | |
| Semiprimes | 138th | |
| Sexy primes (1st member) | 45th | |
| Roman numberals | CDXLVII | CDLVII |
| Base 2 | 1101111112 | 1110010012 |
| Base 3 | 1211203 | 1212213 |
| Base 4 | 123334 | 130214 |
| Base 5 | 32425 | 33125 |
| Base 6 | 20236 | 20416 |
| Base 7 | 12067 | 12227 |
| Base 8 | 6778 | 7118 |
| Base 9 | 5469 | 5579 |
| Base 10 | 44710 | 45710 |
| Base 11 | 37711 | 38611 |
| Base 12 | 31312 | 32112 |
| Base 13 | 28513 | 29213 |
| Base 14 | 23d14 | 24914 |
| Base 15 | 1ec15 | 20715 |
| Base 16 | 1bf16 | 1c916 |