Compare 1966 vs 1978
| Property | 1966 | 1978 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 3 |
| Total factors | 2 | 3 |
| Prime factorization | 21 × 9831 | 21 × 231 × 431 |
| Prime factorization | 2 × 983 | 2 × 23 × 43 |
| Divisors count | 4 | 8 |
| Divisors | 1, 2, 983, 1966 | 1, 2, 23, 43, 46, 86, 989, 1978 |
| Number of properties | 1 | 0 |
| Semiprimes | 568th | |
| Roman numberals | MCMLXVI | MCMLXXVIII |
| Base 2 | 111101011102 | 111101110102 |
| Base 3 | 22002113 | 22010213 |
| Base 4 | 1322324 | 1323224 |
| Base 5 | 303315 | 304035 |
| Base 6 | 130346 | 130546 |
| Base 7 | 55067 | 55247 |
| Base 8 | 36568 | 36728 |
| Base 9 | 26249 | 26379 |
| Base 10 | 196610 | 197810 |
| Base 11 | 152811 | 153911 |
| Base 12 | 117a12 | 118a12 |
| Base 13 | b8313 | b9213 |
| Base 14 | a0614 | a1414 |
| Base 15 | 8b115 | 8bd15 |
| Base 16 | 7ae16 | 7ba16 |