Compare 39 vs 42
| Property | 39 | 42 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 3 |
| Total factors | 2 | 3 |
| Prime factorization | 31 × 131 | 21 × 31 × 71 |
| Prime factorization | 3 × 13 | 2 × 3 × 7 |
| Divisors count | 4 | 8 |
| Divisors | 1, 3, 13, 39 | 1, 2, 3, 6, 7, 14, 21, 42 |
| Number of properties | 1 | 0 |
| Semiprimes | 15th | |
| Roman numberals | XXXIX | XLII |
| Base 2 | 1001112 | 1010102 |
| Base 3 | 11103 | 11203 |
| Base 4 | 2134 | 2224 |
| Base 5 | 1245 | 1325 |
| Base 6 | 1036 | 1106 |
| Base 7 | 547 | 607 |
| Base 8 | 478 | 528 |
| Base 9 | 439 | 469 |
| Base 10 | 3910 | 4210 |
| Base 11 | 3611 | 3911 |
| Base 12 | 3312 | 3612 |
| Base 13 | 3013 | 3313 |
| Base 14 | 2b14 | 3014 |
| Base 15 | 2915 | 2c15 |
| Base 16 | 2716 | 2a16 |