Compare 990987 vs 990989
| Property | 990987 | 990989 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 31 × 3303291 | 9909891 |
| Prime factorization | 3 × 330329 | 990989 |
| Divisors count | 4 | 2 |
| Divisors | 1, 3, 330329, 990987 | 1, 990989 |
| Number of properties | 1 | 4 |
| Chen primes | 29726th | |
| Emirps | 10968th | |
| Isolated primes | 61633rd | |
| Primes | 77848th | |
| Semiprimes | 208235th | |
| Roman numberals | ||
| Base 2 | 111100011111000010112 | 111100011111000011012 |
| Base 3 | 12121001010203 | 12121001010223 |
| Base 4 | 33013300234 | 33013300314 |
| Base 5 | 2232024225 | 2232024245 |
| Base 6 | 331235236 | 331235256 |
| Base 7 | 112651147 | 112651167 |
| Base 8 | 36174138 | 36174158 |
| Base 9 | 17703369 | 17703389 |
| Base 10 | 99098710 | 99098910 |
| Base 11 | 6175a811 | 6175aa11 |
| Base 12 | 3b95a312 | 3b95a512 |
| Base 13 | 2890aa13 | 2890ac13 |
| Base 14 | 1bb20b14 | 1bb20d14 |
| Base 15 | 14895c15 | 14895e15 |
| Base 16 | f1f0b16 | f1f0d16 |