Compare 1966 vs 1985
| Property | 1966 | 1985 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 21 × 9831 | 51 × 3971 |
| Prime factorization | 2 × 983 | 5 × 397 |
| Divisors count | 4 | 4 |
| Divisors | 1, 2, 983, 1966 | 1, 5, 397, 1985 |
| Number of properties | 1 | 1 |
| Semiprimes | 568th | 575th |
| Roman numberals | MCMLXVI | MCMLXXXV |
| Base 2 | 111101011102 | 111110000012 |
| Base 3 | 22002113 | 22011123 |
| Base 4 | 1322324 | 1330014 |
| Base 5 | 303315 | 304205 |
| Base 6 | 130346 | 131056 |
| Base 7 | 55067 | 55347 |
| Base 8 | 36568 | 37018 |
| Base 9 | 26249 | 26459 |
| Base 10 | 196610 | 198510 |
| Base 11 | 152811 | 154511 |
| Base 12 | 117a12 | 119512 |
| Base 13 | b8313 | b9913 |
| Base 14 | a0614 | a1b14 |
| Base 15 | 8b115 | 8c515 |
| Base 16 | 7ae16 | 7c116 |