Compare 9887 vs 9891
| Property | 9887 | 9891 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 4 |
| Prime factorization | 98871 | 32 × 71 × 1571 |
| Prime factorization | 9887 | 3 × 3 × 7 × 157 |
| Divisors count | 2 | 12 |
| Divisors | 1, 9887 | 1, 3, 7, 9, 21, 63, 157, 471, 1099, 1413, 3297, 9891 |
| Number of properties | 6 | 0 |
| Cousin primes (2nd member) | 203rd | |
| Harmonic primes | 444th | |
| Isolated primes | 813th | |
| Long primes | 464th | |
| Primes | 1220th | |
| Safe primes | 115th | |
| Roman numberals | ||
| Base 2 | 100110100111112 | 100110101000112 |
| Base 3 | 1111200123 | 1111201003 |
| Base 4 | 21221334 | 21222034 |
| Base 5 | 3040225 | 3040315 |
| Base 6 | 1134356 | 1134436 |
| Base 7 | 405537 | 405607 |
| Base 8 | 232378 | 232438 |
| Base 9 | 145059 | 145109 |
| Base 10 | 988710 | 989110 |
| Base 11 | 747911 | 748211 |
| Base 12 | 587b12 | 588312 |
| Base 13 | 466713 | 466b13 |
| Base 14 | 386314 | 386714 |
| Base 15 | 2de215 | 2de615 |
| Base 16 | 269f16 | 26a316 |