Compare 21287 vs 21291
| Property | 21287 | 21291 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 3 |
| Total factors | 2 | 3 |
| Prime factorization | 71 × 30411 | 31 × 471 × 1511 |
| Prime factorization | 7 × 3041 | 3 × 47 × 151 |
| Divisors count | 4 | 8 |
| Divisors | 1, 7, 3041, 21287 | 1, 3, 47, 141, 151, 453, 7097, 21291 |
| Number of properties | 1 | 0 |
| Semiprimes | 5394th | |
| Roman numberals | ||
| Base 2 | 1010011001001112 | 1010011001010112 |
| Base 3 | 10020121023 | 10020121203 |
| Base 4 | 110302134 | 110302234 |
| Base 5 | 11401225 | 11401315 |
| Base 6 | 2423156 | 2423236 |
| Base 7 | 1160307 | 1160347 |
| Base 8 | 514478 | 514538 |
| Base 9 | 321729 | 321769 |
| Base 10 | 2128710 | 2129110 |
| Base 11 | 14aa211 | 14aa611 |
| Base 12 | 1039b12 | 103a312 |
| Base 13 | 98c613 | 98ca13 |
| Base 14 | 7a8714 | 7a8b14 |
| Base 15 | 649215 | 649615 |
| Base 16 | 532716 | 532b16 |