Compare 1980 vs 1989
| Property | 1980 | 1989 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 4 | 3 |
| Total factors | 6 | 4 |
| Prime factorization | 22 × 32 × 51 × 111 | 32 × 131 × 171 |
| Prime factorization | 2 × 2 × 3 × 3 × 5 × 11 | 3 × 3 × 13 × 17 |
| Divisors count | 36 | 12 |
| Divisors | 1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980 | 1, 3, 9, 13, 17, 39, 51, 117, 153, 221, 663, 1989 |
| Number of properties | 0 | 0 |
| Roman numberals | MCMLXXX | MCMLXXXIX |
| Base 2 | 111101111002 | 111110001012 |
| Base 3 | 22011003 | 22012003 |
| Base 4 | 1323304 | 1330114 |
| Base 5 | 304105 | 304245 |
| Base 6 | 131006 | 131136 |
| Base 7 | 55267 | 55417 |
| Base 8 | 36748 | 37058 |
| Base 9 | 26409 | 26509 |
| Base 10 | 198010 | 198910 |
| Base 11 | 154011 | 154911 |
| Base 12 | 119012 | 119912 |
| Base 13 | b9413 | ba013 |
| Base 14 | a1614 | a2114 |
| Base 15 | 8c015 | 8c915 |
| Base 16 | 7bc16 | 7c516 |