Compare 87 vs 121
| Property | 87 | 121 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 2 |
| Prime factorization | 31 × 291 | 112 |
| Prime factorization | 3 × 29 | 11 × 11 |
| Divisors count | 4 | 3 |
| Divisors | 1, 3, 29, 87 | 1, 11, 121 |
| Number of properties | 1 | 1 |
| Semiprimes | 30th | 40th |
| Roman numberals | LXXXVII | CXXI |
| Base 2 | 10101112 | 11110012 |
| Base 3 | 100203 | 111113 |
| Base 4 | 11134 | 13214 |
| Base 5 | 3225 | 4415 |
| Base 6 | 2236 | 3216 |
| Base 7 | 1537 | 2327 |
| Base 8 | 1278 | 1718 |
| Base 9 | 1069 | 1449 |
| Base 10 | 8710 | 12110 |
| Base 11 | 7a11 | 10011 |
| Base 12 | 7312 | a112 |
| Base 13 | 6913 | 9413 |
| Base 14 | 6314 | 8914 |
| Base 15 | 5c15 | 8115 |
| Base 16 | 5716 | 7916 |