Compare 87 vs 123
| Property | 87 | 123 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 31 × 291 | 31 × 411 |
| Prime factorization | 3 × 29 | 3 × 41 |
| Divisors count | 4 | 4 |
| Divisors | 1, 3, 29, 87 | 1, 3, 41, 123 |
| Number of properties | 1 | 1 |
| Semiprimes | 30th | 42nd |
| Roman numberals | LXXXVII | CXXIII |
| Base 2 | 10101112 | 11110112 |
| Base 3 | 100203 | 111203 |
| Base 4 | 11134 | 13234 |
| Base 5 | 3225 | 4435 |
| Base 6 | 2236 | 3236 |
| Base 7 | 1537 | 2347 |
| Base 8 | 1278 | 1738 |
| Base 9 | 1069 | 1469 |
| Base 10 | 8710 | 12310 |
| Base 11 | 7a11 | 10211 |
| Base 12 | 7312 | a312 |
| Base 13 | 6913 | 9613 |
| Base 14 | 6314 | 8b14 |
| Base 15 | 5c15 | 8315 |
| Base 16 | 5716 | 7b16 |