Compare 1649 vs 1660
| Property | 1649 | 1660 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 3 |
| Total factors | 2 | 4 |
| Prime factorization | 171 × 971 | 22 × 51 × 831 |
| Prime factorization | 17 × 97 | 2 × 2 × 5 × 83 |
| Divisors count | 4 | 12 |
| Divisors | 1, 17, 97, 1649 | 1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 830, 1660 |
| Number of properties | 1 | 0 |
| Semiprimes | 474th | |
| Roman numberals | MDCXLIX | MDCLX |
| Base 2 | 110011100012 | 110011111002 |
| Base 3 | 20210023 | 20211113 |
| Base 4 | 1213014 | 1213304 |
| Base 5 | 230445 | 231205 |
| Base 6 | 113456 | 114046 |
| Base 7 | 45447 | 45617 |
| Base 8 | 31618 | 31748 |
| Base 9 | 22329 | 22449 |
| Base 10 | 164910 | 166010 |
| Base 11 | 126a11 | 127a11 |
| Base 12 | b5512 | b6412 |
| Base 13 | 99b13 | 9a913 |
| Base 14 | 85b14 | 86814 |
| Base 15 | 74e15 | 75a15 |
| Base 16 | 67116 | 67c16 |