Compare 1659 vs 1661
| Property | 1659 | 1661 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 3 | 2 |
| Total factors | 3 | 2 |
| Prime factorization | 31 × 71 × 791 | 111 × 1511 |
| Prime factorization | 3 × 7 × 79 | 11 × 151 |
| Divisors count | 8 | 4 |
| Divisors | 1, 3, 7, 21, 79, 237, 553, 1659 | 1, 11, 151, 1661 |
| Number of properties | 0 | 1 |
| Semiprimes | 479th | |
| Roman numberals | MDCLIX | MDCLXI |
| Base 2 | 110011110112 | 110011111012 |
| Base 3 | 20211103 | 20211123 |
| Base 4 | 1213234 | 1213314 |
| Base 5 | 231145 | 231215 |
| Base 6 | 114036 | 114056 |
| Base 7 | 45607 | 45627 |
| Base 8 | 31738 | 31758 |
| Base 9 | 22439 | 22459 |
| Base 10 | 165910 | 166110 |
| Base 11 | 127911 | 128011 |
| Base 12 | b6312 | b6512 |
| Base 13 | 9a813 | 9aa13 |
| Base 14 | 86714 | 86914 |
| Base 15 | 75915 | 75b15 |
| Base 16 | 67b16 | 67d16 |