Compare 1671 vs 1680
| Property | 1671 | 1680 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 4 |
| Total factors | 2 | 7 |
| Prime factorization | 31 × 5571 | 24 × 31 × 51 × 71 |
| Prime factorization | 3 × 557 | 2 × 2 × 2 × 2 × 3 × 5 × 7 |
| Divisors count | 4 | 40 |
| Divisors | 1, 3, 557, 1671 | 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680 |
| Number of properties | 1 | 0 |
| Semiprimes | 480th | |
| Roman numberals | MDCLXXI | MDCLXXX |
| Base 2 | 110100001112 | 110100100002 |
| Base 3 | 20212203 | 20220203 |
| Base 4 | 1220134 | 1221004 |
| Base 5 | 231415 | 232105 |
| Base 6 | 114236 | 114406 |
| Base 7 | 46057 | 46207 |
| Base 8 | 32078 | 32208 |
| Base 9 | 22569 | 22669 |
| Base 10 | 167110 | 168010 |
| Base 11 | 128a11 | 129811 |
| Base 12 | b7312 | b8012 |
| Base 13 | 9b713 | 9c313 |
| Base 14 | 87514 | 88014 |
| Base 15 | 76615 | 77015 |
| Base 16 | 68716 | 69016 |