Compare 1989 vs 1990
| Property | 1989 | 1990 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 3 | 3 |
| Total factors | 4 | 3 |
| Prime factorization | 32 × 131 × 171 | 21 × 51 × 1991 |
| Prime factorization | 3 × 3 × 13 × 17 | 2 × 5 × 199 |
| Divisors count | 12 | 8 |
| Divisors | 1, 3, 9, 13, 17, 39, 51, 117, 153, 221, 663, 1989 | 1, 2, 5, 10, 199, 398, 995, 1990 |
| Number of properties | 0 | 0 |
| Roman numberals | MCMLXXXIX | MCMXC |
| Base 2 | 111110001012 | 111110001102 |
| Base 3 | 22012003 | 22012013 |
| Base 4 | 1330114 | 1330124 |
| Base 5 | 304245 | 304305 |
| Base 6 | 131136 | 131146 |
| Base 7 | 55417 | 55427 |
| Base 8 | 37058 | 37068 |
| Base 9 | 26509 | 26519 |
| Base 10 | 198910 | 199010 |
| Base 11 | 154911 | 154a11 |
| Base 12 | 119912 | 119a12 |
| Base 13 | ba013 | ba113 |
| Base 14 | a2114 | a2214 |
| Base 15 | 8c915 | 8ca15 |
| Base 16 | 7c516 | 7c616 |