Compare 2001 vs 2005
| Property | 2001 | 2005 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 3 | 2 |
| Total factors | 3 | 2 |
| Prime factorization | 31 × 231 × 291 | 51 × 4011 |
| Prime factorization | 3 × 23 × 29 | 5 × 401 |
| Divisors count | 8 | 4 |
| Divisors | 1, 3, 23, 29, 69, 87, 667, 2001 | 1, 5, 401, 2005 |
| Number of properties | 0 | 1 |
| Semiprimes | 578th | |
| Roman numberals | MMI | MMV |
| Base 2 | 111110100012 | 111110101012 |
| Base 3 | 22020103 | 22020213 |
| Base 4 | 1331014 | 1331114 |
| Base 5 | 310015 | 310105 |
| Base 6 | 131336 | 131416 |
| Base 7 | 55567 | 55637 |
| Base 8 | 37218 | 37258 |
| Base 9 | 26639 | 26679 |
| Base 10 | 200110 | 200510 |
| Base 11 | 155a11 | 156311 |
| Base 12 | 11a912 | 11b112 |
| Base 13 | bac13 | bb313 |
| Base 14 | a2d14 | a3314 |
| Base 15 | 8d615 | 8da15 |
| Base 16 | 7d116 | 7d516 |