Compare 20990 vs 20991
| Property | 20990 | 20991 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 3 | 2 |
| Total factors | 3 | 2 |
| Prime factorization | 21 × 51 × 20991 | 31 × 69971 |
| Prime factorization | 2 × 5 × 2099 | 3 × 6997 |
| Divisors count | 8 | 4 |
| Divisors | 1, 2, 5, 10, 2099, 4198, 10495, 20990 | 1, 3, 6997, 20991 |
| Number of properties | 0 | 1 |
| Semiprimes | 5325th | |
| Roman numberals | ||
| Base 2 | 1010001111111102 | 1010001111111112 |
| Base 3 | 10012101023 | 10012101103 |
| Base 4 | 110133324 | 110133334 |
| Base 5 | 11324305 | 11324315 |
| Base 6 | 2411026 | 2411036 |
| Base 7 | 1151247 | 1151257 |
| Base 8 | 507768 | 507778 |
| Base 9 | 317129 | 317139 |
| Base 10 | 2099010 | 2099110 |
| Base 11 | 1485211 | 1485311 |
| Base 12 | 1019212 | 1019312 |
| Base 13 | 972813 | 972913 |
| Base 14 | 791414 | 791514 |
| Base 15 | 634515 | 634615 |
| Base 16 | 51fe16 | 51ff16 |