Compare 649 vs 689
| Property | 649 | 689 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 111 × 591 | 131 × 531 |
| Prime factorization | 11 × 59 | 13 × 53 |
| Divisors count | 4 | 4 |
| Divisors | 1, 11, 59, 649 | 1, 13, 53, 689 |
| Number of properties | 1 | 1 |
| Semiprimes | 196th | 207th |
| Roman numberals | DCXLIX | DCLXXXIX |
| Base 2 | 10100010012 | 10101100012 |
| Base 3 | 2200013 | 2211123 |
| Base 4 | 220214 | 223014 |
| Base 5 | 100445 | 102245 |
| Base 6 | 30016 | 31056 |
| Base 7 | 16157 | 20037 |
| Base 8 | 12118 | 12618 |
| Base 9 | 8019 | 8459 |
| Base 10 | 64910 | 68910 |
| Base 11 | 54011 | 57711 |
| Base 12 | 46112 | 49512 |
| Base 13 | 3ac13 | 41013 |
| Base 14 | 34514 | 37314 |
| Base 15 | 2d415 | 30e15 |
| Base 16 | 28916 | 2b116 |