Compare 201981 vs 201989
| Property | 201981 | 201989 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 3 | 2 |
| Total factors | 3 | 2 |
| Prime factorization | 31 × 131 × 51791 | 191 × 106311 |
| Prime factorization | 3 × 13 × 5179 | 19 × 10631 |
| Divisors count | 8 | 4 |
| Divisors | 1, 3, 13, 39, 5179, 15537, 67327, 201981 | 1, 19, 10631, 201989 |
| Number of properties | 0 | 1 |
| Semiprimes | 45655th | |
| Roman numberals | ||
| Base 2 | 1100010100111111012 | 1100010101000001012 |
| Base 3 | 1010210012103 | 1010210020023 |
| Base 4 | 3011033314 | 3011100114 |
| Base 5 | 224304115 | 224304245 |
| Base 6 | 41550336 | 41550456 |
| Base 7 | 15006037 | 15006147 |
| Base 8 | 6123758 | 6124058 |
| Base 9 | 3370539 | 3370629 |
| Base 10 | 20198110 | 20198910 |
| Base 11 | 12882a11 | 12883711 |
| Base 12 | 98a7912 | 98a8512 |
| Base 13 | 70c2013 | 70c2813 |
| Base 14 | 5387314 | 5387b14 |
| Base 15 | 3eca615 | 3ecae15 |
| Base 16 | 314fd16 | 3150516 |