Compare 18 vs 33
| Property | 18 | 33 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 3 | 2 |
| Prime factorization | 21 × 32 | 31 × 111 |
| Prime factorization | 2 × 3 × 3 | 3 × 11 |
| Divisors count | 6 | 4 |
| Divisors | 1, 2, 3, 6, 9, 18 | 1, 3, 11, 33 |
| Number of properties | 0 | 1 |
| Semiprimes | 11th | |
| Roman numberals | XVIII | XXXIII |
| Base 2 | 100102 | 1000012 |
| Base 3 | 2003 | 10203 |
| Base 4 | 1024 | 2014 |
| Base 5 | 335 | 1135 |
| Base 6 | 306 | 536 |
| Base 7 | 247 | 457 |
| Base 8 | 228 | 418 |
| Base 9 | 209 | 369 |
| Base 10 | 1810 | 3310 |
| Base 11 | 1711 | 3011 |
| Base 12 | 1612 | 2912 |
| Base 13 | 1513 | 2713 |
| Base 14 | 1414 | 2514 |
| Base 15 | 1315 | 2315 |
| Base 16 | 1216 | 2116 |