Compare 142 vs 155
| Property | 142 | 155 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 21 × 711 | 51 × 311 |
| Prime factorization | 2 × 71 | 5 × 31 |
| Divisors count | 4 | 4 |
| Divisors | 1, 2, 71, 142 | 1, 5, 31, 155 |
| Number of properties | 1 | 1 |
| Semiprimes | 47th | 51st |
| Roman numberals | CXLII | CLV |
| Base 2 | 100011102 | 100110112 |
| Base 3 | 120213 | 122023 |
| Base 4 | 20324 | 21234 |
| Base 5 | 10325 | 11105 |
| Base 6 | 3546 | 4156 |
| Base 7 | 2627 | 3117 |
| Base 8 | 2168 | 2338 |
| Base 9 | 1679 | 1829 |
| Base 10 | 14210 | 15510 |
| Base 11 | 11a11 | 13111 |
| Base 12 | ba12 | 10b12 |
| Base 13 | ac13 | bc13 |
| Base 14 | a214 | b114 |
| Base 15 | 9715 | a515 |
| Base 16 | 8e16 | 9b16 |