Compare 990917 vs 990919
| Property | 990917 | 990919 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 9909171 | 1091 × 90911 |
| Prime factorization | 990917 | 109 × 9091 |
| Divisors count | 2 | 4 |
| Divisors | 1, 990917 | 1, 109, 9091, 990919 |
| Number of properties | 4 | 1 |
| Chen primes | 29725th | |
| Isolated primes | 61627th | |
| Primes | 77842nd | |
| Semiprimes | 208220th | |
| Sexy primes (1st member) | 16259th | |
| Roman numberals | ||
| Base 2 | 111100011110110001012 | 111100011110110001112 |
| Base 3 | 12121000211223 | 12121000212013 |
| Base 4 | 33013230114 | 33013230134 |
| Base 5 | 2232021325 | 2232021345 |
| Base 6 | 331233256 | 331233316 |
| Base 7 | 112646547 | 112646567 |
| Base 8 | 36173058 | 36173078 |
| Base 9 | 17702489 | 17702519 |
| Base 10 | 99091710 | 99091910 |
| Base 11 | 61754411 | 61754611 |
| Base 12 | 3b954512 | 3b954712 |
| Base 13 | 28905513 | 28905713 |
| Base 14 | 1bb19b14 | 1bb19d14 |
| Base 15 | 14891215 | 14891415 |
| Base 16 | f1ec516 | f1ec716 |