Compare 2021 vs 2045
| Property | 2021 | 2045 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 431 × 471 | 51 × 4091 |
| Prime factorization | 43 × 47 | 5 × 409 |
| Divisors count | 4 | 4 |
| Divisors | 1, 43, 47, 2021 | 1, 5, 409, 2045 |
| Number of properties | 1 | 1 |
| Semiprimes | 581st | 588th |
| Roman numberals | MMXXI | MMXLV |
| Base 2 | 111111001012 | 111111111012 |
| Base 3 | 22022123 | 22102023 |
| Base 4 | 1332114 | 1333314 |
| Base 5 | 310415 | 311405 |
| Base 6 | 132056 | 132456 |
| Base 7 | 56157 | 56517 |
| Base 8 | 37458 | 37758 |
| Base 9 | 26859 | 27229 |
| Base 10 | 202110 | 204510 |
| Base 11 | 157811 | 159a11 |
| Base 12 | 120512 | 122512 |
| Base 13 | bc613 | c1413 |
| Base 14 | a4514 | a6114 |
| Base 15 | 8eb15 | 91515 |
| Base 16 | 7e516 | 7fd16 |