Compare 663 vs 668
| Property | 663 | 668 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 3 | 2 |
| Total factors | 3 | 3 |
| Prime factorization | 31 × 131 × 171 | 22 × 1671 |
| Prime factorization | 3 × 13 × 17 | 2 × 2 × 167 |
| Divisors count | 8 | 6 |
| Divisors | 1, 3, 13, 17, 39, 51, 221, 663 | 1, 2, 4, 167, 334, 668 |
| Number of properties | 0 | 0 |
| Roman numberals | DCLXIII | DCLXVIII |
| Base 2 | 10100101112 | 10100111002 |
| Base 3 | 2201203 | 2202023 |
| Base 4 | 221134 | 221304 |
| Base 5 | 101235 | 101335 |
| Base 6 | 30236 | 30326 |
| Base 7 | 16357 | 16437 |
| Base 8 | 12278 | 12348 |
| Base 9 | 8169 | 8229 |
| Base 10 | 66310 | 66810 |
| Base 11 | 55311 | 55811 |
| Base 12 | 47312 | 47812 |
| Base 13 | 3c013 | 3c513 |
| Base 14 | 35514 | 35a14 |
| Base 15 | 2e315 | 2e815 |
| Base 16 | 29716 | 29c16 |