Compare 1445 vs 1457
| Property | 1445 | 1457 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 3 | 2 |
| Prime factorization | 51 × 172 | 311 × 471 |
| Prime factorization | 5 × 17 × 17 | 31 × 47 |
| Divisors count | 6 | 4 |
| Divisors | 1, 5, 17, 85, 289, 1445 | 1, 31, 47, 1457 |
| Number of properties | 0 | 1 |
| Semiprimes | 427th | |
| Roman numberals | MCDXLV | MCDLVII |
| Base 2 | 101101001012 | 101101100012 |
| Base 3 | 12221123 | 12222223 |
| Base 4 | 1122114 | 1123014 |
| Base 5 | 212405 | 213125 |
| Base 6 | 104056 | 104256 |
| Base 7 | 41337 | 41517 |
| Base 8 | 26458 | 26618 |
| Base 9 | 18759 | 18889 |
| Base 10 | 144510 | 145710 |
| Base 11 | 10a411 | 110511 |
| Base 12 | a0512 | a1512 |
| Base 13 | 87213 | 88113 |
| Base 14 | 75314 | 76114 |
| Base 15 | 66515 | 67215 |
| Base 16 | 5a516 | 5b116 |