Compare 1991 vs 2033
| Property | 1991 | 2033 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 111 × 1811 | 191 × 1071 |
| Prime factorization | 11 × 181 | 19 × 107 |
| Divisors count | 4 | 4 |
| Divisors | 1, 11, 181, 1991 | 1, 19, 107, 2033 |
| Number of properties | 1 | 1 |
| Semiprimes | 576th | 584th |
| Roman numberals | MCMXCI | MMXXXIII |
| Base 2 | 111110001112 | 111111100012 |
| Base 3 | 22012023 | 22100223 |
| Base 4 | 1330134 | 1333014 |
| Base 5 | 304315 | 311135 |
| Base 6 | 131156 | 132256 |
| Base 7 | 55437 | 56337 |
| Base 8 | 37078 | 37618 |
| Base 9 | 26529 | 27089 |
| Base 10 | 199110 | 203310 |
| Base 11 | 155011 | 158911 |
| Base 12 | 119b12 | 121512 |
| Base 13 | ba213 | c0513 |
| Base 14 | a2314 | a5314 |
| Base 15 | 8cb15 | 90815 |
| Base 16 | 7c716 | 7f116 |