Compare 201989 vs 201991
| Property | 201989 | 201991 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 191 × 106311 | 731 × 27671 |
| Prime factorization | 19 × 10631 | 73 × 2767 |
| Divisors count | 4 | 4 |
| Divisors | 1, 19, 10631, 201989 | 1, 73, 2767, 201991 |
| Number of properties | 1 | 1 |
| Semiprimes | 45655th | 45656th |
| Roman numberals | ||
| Base 2 | 1100010101000001012 | 1100010101000001112 |
| Base 3 | 1010210020023 | 1010210020113 |
| Base 4 | 3011100114 | 3011100134 |
| Base 5 | 224304245 | 224304315 |
| Base 6 | 41550456 | 41550516 |
| Base 7 | 15006147 | 15006167 |
| Base 8 | 6124058 | 6124078 |
| Base 9 | 3370629 | 3370649 |
| Base 10 | 20198910 | 20199110 |
| Base 11 | 12883711 | 12883911 |
| Base 12 | 98a8512 | 98a8712 |
| Base 13 | 70c2813 | 70c2a13 |
| Base 14 | 5387b14 | 5387d14 |
| Base 15 | 3ecae15 | 3ecb115 |
| Base 16 | 3150516 | 3150716 |