Compare 2661 vs 2666
| Property | 2661 | 2666 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 3 |
| Total factors | 2 | 3 |
| Prime factorization | 31 × 8871 | 21 × 311 × 431 |
| Prime factorization | 3 × 887 | 2 × 31 × 43 |
| Divisors count | 4 | 8 |
| Divisors | 1, 3, 887, 2661 | 1, 2, 31, 43, 62, 86, 1333, 2666 |
| Number of properties | 1 | 0 |
| Semiprimes | 758th | |
| Roman numberals | MMDCLXI | MMDCLXVI |
| Base 2 | 1010011001012 | 1010011010102 |
| Base 3 | 101221203 | 101222023 |
| Base 4 | 2212114 | 2212224 |
| Base 5 | 411215 | 411315 |
| Base 6 | 201536 | 202026 |
| Base 7 | 105217 | 105267 |
| Base 8 | 51458 | 51528 |
| Base 9 | 35769 | 35829 |
| Base 10 | 266110 | 266610 |
| Base 11 | 1aaa11 | 200411 |
| Base 12 | 165912 | 166212 |
| Base 13 | 129913 | 12a113 |
| Base 14 | d8114 | d8614 |
| Base 15 | bc615 | bcb15 |
| Base 16 | a6516 | a6a16 |