Compare 649 vs 655
| Property | 649 | 655 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 111 × 591 | 51 × 1311 |
| Prime factorization | 11 × 59 | 5 × 131 |
| Divisors count | 4 | 4 |
| Divisors | 1, 11, 59, 649 | 1, 5, 131, 655 |
| Number of properties | 1 | 1 |
| Semiprimes | 196th | 197th |
| Roman numberals | DCXLIX | DCLV |
| Base 2 | 10100010012 | 10100011112 |
| Base 3 | 2200013 | 2200213 |
| Base 4 | 220214 | 220334 |
| Base 5 | 100445 | 101105 |
| Base 6 | 30016 | 30116 |
| Base 7 | 16157 | 16247 |
| Base 8 | 12118 | 12178 |
| Base 9 | 8019 | 8079 |
| Base 10 | 64910 | 65510 |
| Base 11 | 54011 | 54611 |
| Base 12 | 46112 | 46712 |
| Base 13 | 3ac13 | 3b513 |
| Base 14 | 34514 | 34b14 |
| Base 15 | 2d415 | 2da15 |
| Base 16 | 28916 | 28f16 |