Compare 145 vs 155
| Property | 145 | 155 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 51 × 291 | 51 × 311 |
| Prime factorization | 5 × 29 | 5 × 31 |
| Divisors count | 4 | 4 |
| Divisors | 1, 5, 29, 145 | 1, 5, 31, 155 |
| Number of properties | 1 | 1 |
| Semiprimes | 49th | 51st |
| Roman numberals | CXLV | CLV |
| Base 2 | 100100012 | 100110112 |
| Base 3 | 121013 | 122023 |
| Base 4 | 21014 | 21234 |
| Base 5 | 10405 | 11105 |
| Base 6 | 4016 | 4156 |
| Base 7 | 2657 | 3117 |
| Base 8 | 2218 | 2338 |
| Base 9 | 1719 | 1829 |
| Base 10 | 14510 | 15510 |
| Base 11 | 12211 | 13111 |
| Base 12 | 10112 | 10b12 |
| Base 13 | b213 | bc13 |
| Base 14 | a514 | b114 |
| Base 15 | 9a15 | a515 |
| Base 16 | 9116 | 9b16 |