Compare 123 vs 161
| Property | 123 | 161 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 31 × 411 | 71 × 231 |
| Prime factorization | 3 × 41 | 7 × 23 |
| Divisors count | 4 | 4 |
| Divisors | 1, 3, 41, 123 | 1, 7, 23, 161 |
| Number of properties | 1 | 1 |
| Semiprimes | 42nd | 54th |
| Roman numberals | CXXIII | CLXI |
| Base 2 | 11110112 | 101000012 |
| Base 3 | 111203 | 122223 |
| Base 4 | 13234 | 22014 |
| Base 5 | 4435 | 11215 |
| Base 6 | 3236 | 4256 |
| Base 7 | 2347 | 3207 |
| Base 8 | 1738 | 2418 |
| Base 9 | 1469 | 1889 |
| Base 10 | 12310 | 16110 |
| Base 11 | 10211 | 13711 |
| Base 12 | a312 | 11512 |
| Base 13 | 9613 | c513 |
| Base 14 | 8b14 | b714 |
| Base 15 | 8315 | ab15 |
| Base 16 | 7b16 | a116 |