Compare 161 vs 169
| Property | 161 | 169 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 2 |
| Prime factorization | 71 × 231 | 132 |
| Prime factorization | 7 × 23 | 13 × 13 |
| Divisors count | 4 | 3 |
| Divisors | 1, 7, 23, 161 | 1, 13, 169 |
| Number of properties | 1 | 1 |
| Semiprimes | 54th | 56th |
| Roman numberals | CLXI | CLXIX |
| Base 2 | 101000012 | 101010012 |
| Base 3 | 122223 | 200213 |
| Base 4 | 22014 | 22214 |
| Base 5 | 11215 | 11345 |
| Base 6 | 4256 | 4416 |
| Base 7 | 3207 | 3317 |
| Base 8 | 2418 | 2518 |
| Base 9 | 1889 | 2079 |
| Base 10 | 16110 | 16910 |
| Base 11 | 13711 | 14411 |
| Base 12 | 11512 | 12112 |
| Base 13 | c513 | 10013 |
| Base 14 | b714 | c114 |
| Base 15 | ab15 | b415 |
| Base 16 | a116 | a916 |