Compare 20991 vs 21039
| Property | 20991 | 21039 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 31 × 69971 | 31 × 70131 |
| Prime factorization | 3 × 6997 | 3 × 7013 |
| Divisors count | 4 | 4 |
| Divisors | 1, 3, 6997, 20991 | 1, 3, 7013, 21039 |
| Number of properties | 1 | 1 |
| Semiprimes | 5325th | 5335th |
| Roman numberals | ||
| Base 2 | 1010001111111112 | 1010010001011112 |
| Base 3 | 10012101103 | 10012120203 |
| Base 4 | 110133334 | 110202334 |
| Base 5 | 11324315 | 11331245 |
| Base 6 | 2411036 | 2412236 |
| Base 7 | 1151257 | 1152247 |
| Base 8 | 507778 | 510578 |
| Base 9 | 317139 | 317669 |
| Base 10 | 2099110 | 2103910 |
| Base 11 | 1485311 | 1489711 |
| Base 12 | 1019312 | 1021312 |
| Base 13 | 972913 | 976513 |
| Base 14 | 791514 | 794b14 |
| Base 15 | 634615 | 637915 |
| Base 16 | 51ff16 | 522f16 |