Compare 30 vs 55
| Property | 30 | 55 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 3 | 2 |
| Total factors | 3 | 2 |
| Prime factorization | 21 × 31 × 51 | 51 × 111 |
| Prime factorization | 2 × 3 × 5 | 5 × 11 |
| Divisors count | 8 | 4 |
| Divisors | 1, 2, 3, 5, 6, 10, 15, 30 | 1, 5, 11, 55 |
| Number of properties | 0 | 1 |
| Semiprimes | 19th | |
| Roman numberals | XXX | LV |
| Base 2 | 111102 | 1101112 |
| Base 3 | 10103 | 20013 |
| Base 4 | 1324 | 3134 |
| Base 5 | 1105 | 2105 |
| Base 6 | 506 | 1316 |
| Base 7 | 427 | 1067 |
| Base 8 | 368 | 678 |
| Base 9 | 339 | 619 |
| Base 10 | 3010 | 5510 |
| Base 11 | 2811 | 5011 |
| Base 12 | 2612 | 4712 |
| Base 13 | 2413 | 4313 |
| Base 14 | 2214 | 3d14 |
| Base 15 | 2015 | 3a15 |
| Base 16 | 1e16 | 3716 |