Compare 2009 vs 2019
| Property | 2009 | 2019 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 3 | 2 |
| Prime factorization | 72 × 411 | 31 × 6731 |
| Prime factorization | 7 × 7 × 41 | 3 × 673 |
| Divisors count | 6 | 4 |
| Divisors | 1, 7, 41, 49, 287, 2009 | 1, 3, 673, 2019 |
| Number of properties | 0 | 1 |
| Semiprimes | 580th | |
| Roman numberals | MMIX | MMXIX |
| Base 2 | 111110110012 | 111111000112 |
| Base 3 | 22021023 | 22022103 |
| Base 4 | 1331214 | 1332034 |
| Base 5 | 310145 | 310345 |
| Base 6 | 131456 | 132036 |
| Base 7 | 56007 | 56137 |
| Base 8 | 37318 | 37438 |
| Base 9 | 26729 | 26839 |
| Base 10 | 200910 | 201910 |
| Base 11 | 156711 | 157611 |
| Base 12 | 11b512 | 120312 |
| Base 13 | bb713 | bc413 |
| Base 14 | a3714 | a4314 |
| Base 15 | 8de15 | 8e915 |
| Base 16 | 7d916 | 7e316 |