Compare 1639 vs 1671
| Property | 1639 | 1671 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 111 × 1491 | 31 × 5571 |
| Prime factorization | 11 × 149 | 3 × 557 |
| Divisors count | 4 | 4 |
| Divisors | 1, 11, 149, 1639 | 1, 3, 557, 1671 |
| Number of properties | 1 | 1 |
| Semiprimes | 469th | 480th |
| Roman numberals | MDCXXXIX | MDCLXXI |
| Base 2 | 110011001112 | 110100001112 |
| Base 3 | 20202013 | 20212203 |
| Base 4 | 1212134 | 1220134 |
| Base 5 | 230245 | 231415 |
| Base 6 | 113316 | 114236 |
| Base 7 | 45317 | 46057 |
| Base 8 | 31478 | 32078 |
| Base 9 | 22219 | 22569 |
| Base 10 | 163910 | 167110 |
| Base 11 | 126011 | 128a11 |
| Base 12 | b4712 | b7312 |
| Base 13 | 99113 | 9b713 |
| Base 14 | 85114 | 87514 |
| Base 15 | 74415 | 76615 |
| Base 16 | 66716 | 68716 |