Compare 145 vs 147
| Property | 145 | 147 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 2 |
| Total factors | 2 | 3 |
| Prime factorization | 51 × 291 | 31 × 72 |
| Prime factorization | 5 × 29 | 3 × 7 × 7 |
| Divisors count | 4 | 6 |
| Divisors | 1, 5, 29, 145 | 1, 3, 7, 21, 49, 147 |
| Number of properties | 1 | 0 |
| Semiprimes | 49th | |
| Roman numberals | CXLV | CXLVII |
| Base 2 | 100100012 | 100100112 |
| Base 3 | 121013 | 121103 |
| Base 4 | 21014 | 21034 |
| Base 5 | 10405 | 10425 |
| Base 6 | 4016 | 4036 |
| Base 7 | 2657 | 3007 |
| Base 8 | 2218 | 2238 |
| Base 9 | 1719 | 1739 |
| Base 10 | 14510 | 14710 |
| Base 11 | 12211 | 12411 |
| Base 12 | 10112 | 10312 |
| Base 13 | b213 | b413 |
| Base 14 | a514 | a714 |
| Base 15 | 9a15 | 9c15 |
| Base 16 | 9116 | 9316 |