Compare 9871 vs 9887
| Property | 9871 | 9887 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 98711 | 98871 |
| Prime factorization | 9871 | 9887 |
| Divisors count | 2 | 2 |
| Divisors | 1, 9871 | 1, 9887 |
| Number of properties | 4 | 6 |
| Cousin primes (2nd member) | 203rd | |
| Emirps | 235th | |
| Harmonic primes | 442nd | 444th |
| Isolated primes | 811th | 813th |
| Long primes | 464th | |
| Primes | 1218th | 1220th |
| Safe primes | 115th | |
| Roman numberals | ||
| Base 2 | 100110100011112 | 100110100111112 |
| Base 3 | 1111121213 | 1111200123 |
| Base 4 | 21220334 | 21221334 |
| Base 5 | 3034415 | 3040225 |
| Base 6 | 1134116 | 1134356 |
| Base 7 | 405317 | 405537 |
| Base 8 | 232178 | 232378 |
| Base 9 | 144779 | 145059 |
| Base 10 | 987110 | 988710 |
| Base 11 | 746411 | 747911 |
| Base 12 | 586712 | 587b12 |
| Base 13 | 465413 | 466713 |
| Base 14 | 385114 | 386314 |
| Base 15 | 2dd115 | 2de215 |
| Base 16 | 268f16 | 269f16 |