Compare 87 vs 89
| Property | 87 | 89 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 31 × 291 | 891 |
| Prime factorization | 3 × 29 | 89 |
| Divisors count | 4 | 2 |
| Divisors | 1, 3, 29, 87 | 1, 89 |
| Number of properties | 1 | 8 |
| Additive primes | 14th | |
| Chen primes | 20th | |
| Fibonacci primes | 5th | |
| Isolated primes | 9th | |
| Primes | 24th | |
| Pythagorean primes | 10th | |
| Semiprimes | 30th | |
| Sexy primes (2nd member) | 15th | |
| Sophie germain primes | 10th | |
| Roman numberals | LXXXVII | LXXXIX |
| Base 2 | 10101112 | 10110012 |
| Base 3 | 100203 | 100223 |
| Base 4 | 11134 | 11214 |
| Base 5 | 3225 | 3245 |
| Base 6 | 2236 | 2256 |
| Base 7 | 1537 | 1557 |
| Base 8 | 1278 | 1318 |
| Base 9 | 1069 | 1089 |
| Base 10 | 8710 | 8910 |
| Base 11 | 7a11 | 8111 |
| Base 12 | 7312 | 7512 |
| Base 13 | 6913 | 6b13 |
| Base 14 | 6314 | 6514 |
| Base 15 | 5c15 | 5e15 |
| Base 16 | 5716 | 5916 |