Compare 2005 vs 2009
| Property | 2005 | 2009 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 2 |
| Total factors | 2 | 3 |
| Prime factorization | 51 × 4011 | 72 × 411 |
| Prime factorization | 5 × 401 | 7 × 7 × 41 |
| Divisors count | 4 | 6 |
| Divisors | 1, 5, 401, 2005 | 1, 7, 41, 49, 287, 2009 |
| Number of properties | 1 | 0 |
| Semiprimes | 578th | |
| Roman numberals | MMV | MMIX |
| Base 2 | 111110101012 | 111110110012 |
| Base 3 | 22020213 | 22021023 |
| Base 4 | 1331114 | 1331214 |
| Base 5 | 310105 | 310145 |
| Base 6 | 131416 | 131456 |
| Base 7 | 55637 | 56007 |
| Base 8 | 37258 | 37318 |
| Base 9 | 26679 | 26729 |
| Base 10 | 200510 | 200910 |
| Base 11 | 156311 | 156711 |
| Base 12 | 11b112 | 11b512 |
| Base 13 | bb313 | bb713 |
| Base 14 | a3314 | a3714 |
| Base 15 | 8da15 | 8de15 |
| Base 16 | 7d516 | 7d916 |