Compare 20991 vs 20999
| Property | 20991 | 20999 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 3 |
| Total factors | 2 | 3 |
| Prime factorization | 31 × 69971 | 111 × 231 × 831 |
| Prime factorization | 3 × 6997 | 11 × 23 × 83 |
| Divisors count | 4 | 8 |
| Divisors | 1, 3, 6997, 20991 | 1, 11, 23, 83, 253, 913, 1909, 20999 |
| Number of properties | 1 | 0 |
| Semiprimes | 5325th | |
| Roman numberals | ||
| Base 2 | 1010001111111112 | 1010010000001112 |
| Base 3 | 10012101103 | 10012102023 |
| Base 4 | 110133334 | 110200134 |
| Base 5 | 11324315 | 11324445 |
| Base 6 | 2411036 | 2411156 |
| Base 7 | 1151257 | 1151367 |
| Base 8 | 507778 | 510078 |
| Base 9 | 317139 | 317229 |
| Base 10 | 2099110 | 2099910 |
| Base 11 | 1485311 | 1486011 |
| Base 12 | 1019312 | 1019b12 |
| Base 13 | 972913 | 973413 |
| Base 14 | 791514 | 791d14 |
| Base 15 | 634615 | 634e15 |
| Base 16 | 51ff16 | 520716 |