Compare 161 vs 203
| Property | 161 | 203 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 71 × 231 | 71 × 291 |
| Prime factorization | 7 × 23 | 7 × 29 |
| Divisors count | 4 | 4 |
| Divisors | 1, 7, 23, 161 | 1, 7, 29, 203 |
| Number of properties | 1 | 1 |
| Semiprimes | 54th | 65th |
| Roman numberals | CLXI | CCIII |
| Base 2 | 101000012 | 110010112 |
| Base 3 | 122223 | 211123 |
| Base 4 | 22014 | 30234 |
| Base 5 | 11215 | 13035 |
| Base 6 | 4256 | 5356 |
| Base 7 | 3207 | 4107 |
| Base 8 | 2418 | 3138 |
| Base 9 | 1889 | 2459 |
| Base 10 | 16110 | 20310 |
| Base 11 | 13711 | 17511 |
| Base 12 | 11512 | 14b12 |
| Base 13 | c513 | 12813 |
| Base 14 | b714 | 10714 |
| Base 15 | ab15 | d815 |
| Base 16 | a116 | cb16 |