Compare 1671 vs 1681
| Property | 1671 | 1681 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 2 |
| Prime factorization | 31 × 5571 | 412 |
| Prime factorization | 3 × 557 | 41 × 41 |
| Divisors count | 4 | 3 |
| Divisors | 1, 3, 557, 1671 | 1, 41, 1681 |
| Number of properties | 1 | 1 |
| Semiprimes | 480th | 484th |
| Roman numberals | MDCLXXI | MDCLXXXI |
| Base 2 | 110100001112 | 110100100012 |
| Base 3 | 20212203 | 20220213 |
| Base 4 | 1220134 | 1221014 |
| Base 5 | 231415 | 232115 |
| Base 6 | 114236 | 114416 |
| Base 7 | 46057 | 46217 |
| Base 8 | 32078 | 32218 |
| Base 9 | 22569 | 22679 |
| Base 10 | 167110 | 168110 |
| Base 11 | 128a11 | 129911 |
| Base 12 | b7312 | b8112 |
| Base 13 | 9b713 | 9c413 |
| Base 14 | 87514 | 88114 |
| Base 15 | 76615 | 77115 |
| Base 16 | 68716 | 69116 |