Compare 1643 vs 1644
| Property | 1643 | 1644 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 3 |
| Total factors | 2 | 4 |
| Prime factorization | 311 × 531 | 22 × 31 × 1371 |
| Prime factorization | 31 × 53 | 2 × 2 × 3 × 137 |
| Divisors count | 4 | 12 |
| Divisors | 1, 31, 53, 1643 | 1, 2, 3, 4, 6, 12, 137, 274, 411, 548, 822, 1644 |
| Number of properties | 1 | 0 |
| Semiprimes | 472nd | |
| Roman numberals | MDCXLIII | MDCXLIV |
| Base 2 | 110011010112 | 110011011002 |
| Base 3 | 20202123 | 20202203 |
| Base 4 | 1212234 | 1212304 |
| Base 5 | 230335 | 230345 |
| Base 6 | 113356 | 113406 |
| Base 7 | 45357 | 45367 |
| Base 8 | 31538 | 31548 |
| Base 9 | 22259 | 22269 |
| Base 10 | 164310 | 164410 |
| Base 11 | 126411 | 126511 |
| Base 12 | b4b12 | b5012 |
| Base 13 | 99513 | 99613 |
| Base 14 | 85514 | 85614 |
| Base 15 | 74815 | 74915 |
| Base 16 | 66b16 | 66c16 |