Compare 663 vs 667
| Property | 663 | 667 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 3 | 2 |
| Total factors | 3 | 2 |
| Prime factorization | 31 × 131 × 171 | 231 × 291 |
| Prime factorization | 3 × 13 × 17 | 23 × 29 |
| Divisors count | 8 | 4 |
| Divisors | 1, 3, 13, 17, 39, 51, 221, 663 | 1, 23, 29, 667 |
| Number of properties | 0 | 1 |
| Semiprimes | 199th | |
| Roman numberals | DCLXIII | DCLXVII |
| Base 2 | 10100101112 | 10100110112 |
| Base 3 | 2201203 | 2202013 |
| Base 4 | 221134 | 221234 |
| Base 5 | 101235 | 101325 |
| Base 6 | 30236 | 30316 |
| Base 7 | 16357 | 16427 |
| Base 8 | 12278 | 12338 |
| Base 9 | 8169 | 8219 |
| Base 10 | 66310 | 66710 |
| Base 11 | 55311 | 55711 |
| Base 12 | 47312 | 47712 |
| Base 13 | 3c013 | 3c413 |
| Base 14 | 35514 | 35914 |
| Base 15 | 2e315 | 2e715 |
| Base 16 | 29716 | 29b16 |