Compare 21428 vs 21439
| Property | 21428 | 21439 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 3 | 2 |
| Total factors | 4 | 2 |
| Prime factorization | 22 × 111 × 4871 | 111 × 19491 |
| Prime factorization | 2 × 2 × 11 × 487 | 11 × 1949 |
| Divisors count | 12 | 4 |
| Divisors | 1, 2, 4, 11, 22, 44, 487, 974, 1948, 5357, 10714, 21428 | 1, 11, 1949, 21439 |
| Number of properties | 0 | 1 |
| Semiprimes | 5429th | |
| Roman numberals | ||
| Base 2 | 1010011101101002 | 1010011101111112 |
| Base 3 | 10021011223 | 10021020013 |
| Base 4 | 110323104 | 110323334 |
| Base 5 | 11412035 | 11412245 |
| Base 6 | 2431126 | 2431316 |
| Base 7 | 1163217 | 1163357 |
| Base 8 | 516648 | 516778 |
| Base 9 | 323489 | 323619 |
| Base 10 | 2142810 | 2143910 |
| Base 11 | 1511011 | 1512011 |
| Base 12 | 1049812 | 104a712 |
| Base 13 | 99a413 | 99b213 |
| Base 14 | 7b4814 | 7b5514 |
| Base 15 | 653815 | 654415 |
| Base 16 | 53b416 | 53bf16 |