Compare 987989 vs 987997
| Property | 987989 | 987997 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 171 × 891 × 6531 | 9879971 |
| Prime factorization | 17 × 89 × 653 | 987997 |
| Divisors count | 8 | 2 |
| Divisors | 1, 17, 89, 653, 1513, 11101, 58117, 987989 | 1, 987997 |
| Number of properties | 0 | 5 |
| Chen primes | 29648th | |
| Emirps | 10909th | |
| Isolated primes | 61459th | |
| Primes | 77634th | |
| Sexy primes (2nd member) | 16218th | |
| Roman numberals | ||
| Base 2 | 111100010011010101012 | 111100010011010111012 |
| Base 3 | 12120120210123 | 12120120211113 |
| Base 4 | 33010311114 | 33010311314 |
| Base 5 | 2231034245 | 2231034425 |
| Base 6 | 331020056 | 331020216 |
| Base 7 | 112533027 | 112533137 |
| Base 8 | 36115258 | 36115358 |
| Base 9 | 17652359 | 17652449 |
| Base 10 | 98798910 | 98799710 |
| Base 11 | 61532211 | 61532a11 |
| Base 12 | 3b790512 | 3b791112 |
| Base 13 | 28791213 | 28791a13 |
| Base 14 | 1ba0a914 | 1ba0b314 |
| Base 15 | 147b0e15 | 147b1715 |
| Base 16 | f135516 | f135d16 |