Compare 161 vs 165
| Property | 161 | 165 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 3 |
| Total factors | 2 | 3 |
| Prime factorization | 71 × 231 | 31 × 51 × 111 |
| Prime factorization | 7 × 23 | 3 × 5 × 11 |
| Divisors count | 4 | 8 |
| Divisors | 1, 7, 23, 161 | 1, 3, 5, 11, 15, 33, 55, 165 |
| Number of properties | 1 | 0 |
| Semiprimes | 54th | |
| Roman numberals | CLXI | CLXV |
| Base 2 | 101000012 | 101001012 |
| Base 3 | 122223 | 200103 |
| Base 4 | 22014 | 22114 |
| Base 5 | 11215 | 11305 |
| Base 6 | 4256 | 4336 |
| Base 7 | 3207 | 3247 |
| Base 8 | 2418 | 2458 |
| Base 9 | 1889 | 2039 |
| Base 10 | 16110 | 16510 |
| Base 11 | 13711 | 14011 |
| Base 12 | 11512 | 11912 |
| Base 13 | c513 | c913 |
| Base 14 | b714 | bb14 |
| Base 15 | ab15 | b015 |
| Base 16 | a116 | a516 |