Compare 31989 vs 31990
| Property | 31989 | 31990 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 4 |
| Total factors | 2 | 4 |
| Prime factorization | 31 × 106631 | 21 × 51 × 71 × 4571 |
| Prime factorization | 3 × 10663 | 2 × 5 × 7 × 457 |
| Divisors count | 4 | 16 |
| Divisors | 1, 3, 10663, 31989 | 1, 2, 5, 7, 10, 14, 35, 70, 457, 914, 2285, 3199, 4570, 6398, 15995, 31990 |
| Number of properties | 1 | 0 |
| Semiprimes | 7947th | |
| Roman numberals | ||
| Base 2 | 1111100111101012 | 1111100111101102 |
| Base 3 | 11212122103 | 11212122113 |
| Base 4 | 133033114 | 133033124 |
| Base 5 | 20104245 | 20104305 |
| Base 6 | 4040336 | 4040346 |
| Base 7 | 1621567 | 1621607 |
| Base 8 | 763658 | 763668 |
| Base 9 | 477839 | 477849 |
| Base 10 | 3198910 | 3199010 |
| Base 11 | 2204111 | 2204211 |
| Base 12 | 1661912 | 1661a12 |
| Base 13 | 1173913 | 1173a13 |
| Base 14 | b92d14 | b93014 |
| Base 15 | 972915 | 972a15 |
| Base 16 | 7cf516 | 7cf616 |