Compare 2005 vs 2015
| Property | 2005 | 2015 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 3 |
| Total factors | 2 | 3 |
| Prime factorization | 51 × 4011 | 51 × 131 × 311 |
| Prime factorization | 5 × 401 | 5 × 13 × 31 |
| Divisors count | 4 | 8 |
| Divisors | 1, 5, 401, 2005 | 1, 5, 13, 31, 65, 155, 403, 2015 |
| Number of properties | 1 | 0 |
| Semiprimes | 578th | |
| Roman numberals | MMV | MMXV |
| Base 2 | 111110101012 | 111110111112 |
| Base 3 | 22020213 | 22021223 |
| Base 4 | 1331114 | 1331334 |
| Base 5 | 310105 | 310305 |
| Base 6 | 131416 | 131556 |
| Base 7 | 55637 | 56067 |
| Base 8 | 37258 | 37378 |
| Base 9 | 26679 | 26789 |
| Base 10 | 200510 | 201510 |
| Base 11 | 156311 | 157211 |
| Base 12 | 11b112 | 11bb12 |
| Base 13 | bb313 | bc013 |
| Base 14 | a3314 | a3d14 |
| Base 15 | 8da15 | 8e515 |
| Base 16 | 7d516 | 7df16 |