Compare 89 vs 90
| Property | 89 | 90 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 4 |
| Prime factorization | 891 | 21 × 32 × 51 |
| Prime factorization | 89 | 2 × 3 × 3 × 5 |
| Divisors count | 2 | 12 |
| Divisors | 1, 89 | 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90 |
| Number of properties | 8 | 0 |
| Additive primes | 14th | |
| Chen primes | 20th | |
| Fibonacci primes | 5th | |
| Isolated primes | 9th | |
| Primes | 24th | |
| Pythagorean primes | 10th | |
| Sexy primes (2nd member) | 15th | |
| Sophie germain primes | 10th | |
| Roman numberals | LXXXIX | XC |
| Base 2 | 10110012 | 10110102 |
| Base 3 | 100223 | 101003 |
| Base 4 | 11214 | 11224 |
| Base 5 | 3245 | 3305 |
| Base 6 | 2256 | 2306 |
| Base 7 | 1557 | 1567 |
| Base 8 | 1318 | 1328 |
| Base 9 | 1089 | 1109 |
| Base 10 | 8910 | 9010 |
| Base 11 | 8111 | 8211 |
| Base 12 | 7512 | 7612 |
| Base 13 | 6b13 | 6c13 |
| Base 14 | 6514 | 6614 |
| Base 15 | 5e15 | 6015 |
| Base 16 | 5916 | 5a16 |