Compare 159 vs 161
| Property | 159 | 161 | 
|---|---|---|
| Type | semiprime | semiprime | 
| Unique factors | 2 | 2 | 
| Total factors | 2 | 2 | 
| Prime factorization | 31 × 531 | 71 × 231 | 
| Prime factorization | 3 × 53 | 7 × 23 | 
| Divisors count | 4 | 4 | 
| Divisors | 1, 3, 53, 159 | 1, 7, 23, 161 | 
| Number of properties | 1 | 1 | 
| Semiprimes | 53rd | 54th | 
| Roman numberals | CLIX | CLXI | 
| Base 2 | 100111112 | 101000012 | 
| Base 3 | 122203 | 122223 | 
| Base 4 | 21334 | 22014 | 
| Base 5 | 11145 | 11215 | 
| Base 6 | 4236 | 4256 | 
| Base 7 | 3157 | 3207 | 
| Base 8 | 2378 | 2418 | 
| Base 9 | 1869 | 1889 | 
| Base 10 | 15910 | 16110 | 
| Base 11 | 13511 | 13711 | 
| Base 12 | 11312 | 11512 | 
| Base 13 | c313 | c513 | 
| Base 14 | b514 | b714 | 
| Base 15 | a915 | ab15 | 
| Base 16 | 9f16 | a116 |