Compare 663 vs 671
| Property | 663 | 671 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 3 | 2 |
| Total factors | 3 | 2 |
| Prime factorization | 31 × 131 × 171 | 111 × 611 |
| Prime factorization | 3 × 13 × 17 | 11 × 61 |
| Divisors count | 8 | 4 |
| Divisors | 1, 3, 13, 17, 39, 51, 221, 663 | 1, 11, 61, 671 |
| Number of properties | 0 | 1 |
| Semiprimes | 201st | |
| Roman numberals | DCLXIII | DCLXXI |
| Base 2 | 10100101112 | 10100111112 |
| Base 3 | 2201203 | 2202123 |
| Base 4 | 221134 | 221334 |
| Base 5 | 101235 | 101415 |
| Base 6 | 30236 | 30356 |
| Base 7 | 16357 | 16467 |
| Base 8 | 12278 | 12378 |
| Base 9 | 8169 | 8259 |
| Base 10 | 66310 | 67110 |
| Base 11 | 55311 | 56011 |
| Base 12 | 47312 | 47b12 |
| Base 13 | 3c013 | 3c813 |
| Base 14 | 35514 | 35d14 |
| Base 15 | 2e315 | 2eb15 |
| Base 16 | 29716 | 29f16 |