Compare 18 vs 45
| Property | 18 | 45 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 2 | 2 |
| Total factors | 3 | 3 |
| Prime factorization | 21 × 32 | 32 × 51 |
| Prime factorization | 2 × 3 × 3 | 3 × 3 × 5 |
| Divisors count | 6 | 6 |
| Divisors | 1, 2, 3, 6, 9, 18 | 1, 3, 5, 9, 15, 45 |
| Number of properties | 0 | 0 |
| Roman numberals | XVIII | XLV |
| Base 2 | 100102 | 1011012 |
| Base 3 | 2003 | 12003 |
| Base 4 | 1024 | 2314 |
| Base 5 | 335 | 1405 |
| Base 6 | 306 | 1136 |
| Base 7 | 247 | 637 |
| Base 8 | 228 | 558 |
| Base 9 | 209 | 509 |
| Base 10 | 1810 | 4510 |
| Base 11 | 1711 | 4111 |
| Base 12 | 1612 | 3912 |
| Base 13 | 1513 | 3613 |
| Base 14 | 1414 | 3314 |
| Base 15 | 1315 | 3015 |
| Base 16 | 1216 | 2d16 |