Compare 40 vs 55
| Property | 40 | 55 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 4 | 2 |
| Prime factorization | 23 × 51 | 51 × 111 |
| Prime factorization | 2 × 2 × 2 × 5 | 5 × 11 |
| Divisors count | 8 | 4 |
| Divisors | 1, 2, 4, 5, 8, 10, 20, 40 | 1, 5, 11, 55 |
| Number of properties | 0 | 1 |
| Semiprimes | 19th | |
| Roman numberals | XL | LV |
| Base 2 | 1010002 | 1101112 |
| Base 3 | 11113 | 20013 |
| Base 4 | 2204 | 3134 |
| Base 5 | 1305 | 2105 |
| Base 6 | 1046 | 1316 |
| Base 7 | 557 | 1067 |
| Base 8 | 508 | 678 |
| Base 9 | 449 | 619 |
| Base 10 | 4010 | 5510 |
| Base 11 | 3711 | 5011 |
| Base 12 | 3412 | 4712 |
| Base 13 | 3113 | 4313 |
| Base 14 | 2c14 | 3d14 |
| Base 15 | 2a15 | 3a15 |
| Base 16 | 2816 | 3716 |