Compare 142 vs 145
| Property | 142 | 145 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 21 × 711 | 51 × 291 |
| Prime factorization | 2 × 71 | 5 × 29 |
| Divisors count | 4 | 4 |
| Divisors | 1, 2, 71, 142 | 1, 5, 29, 145 |
| Number of properties | 1 | 1 |
| Semiprimes | 47th | 49th |
| Roman numberals | CXLII | CXLV |
| Base 2 | 100011102 | 100100012 |
| Base 3 | 120213 | 121013 |
| Base 4 | 20324 | 21014 |
| Base 5 | 10325 | 10405 |
| Base 6 | 3546 | 4016 |
| Base 7 | 2627 | 2657 |
| Base 8 | 2168 | 2218 |
| Base 9 | 1679 | 1719 |
| Base 10 | 14210 | 14510 |
| Base 11 | 11a11 | 12211 |
| Base 12 | ba12 | 10112 |
| Base 13 | ac13 | b213 |
| Base 14 | a214 | a514 |
| Base 15 | 9715 | 9a15 |
| Base 16 | 8e16 | 9116 |