Compare 990917 vs 990921
| Property | 990917 | 990921 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 3 |
| Prime factorization | 9909171 | 31 × 1371 × 24111 |
| Prime factorization | 990917 | 3 × 137 × 2411 |
| Divisors count | 2 | 8 |
| Divisors | 1, 990917 | 1, 3, 137, 411, 2411, 7233, 330307, 990921 |
| Number of properties | 4 | 0 |
| Chen primes | 29725th | |
| Isolated primes | 61627th | |
| Primes | 77842nd | |
| Sexy primes (1st member) | 16259th | |
| Roman numberals | ||
| Base 2 | 111100011110110001012 | 111100011110110010012 |
| Base 3 | 12121000211223 | 12121000212103 |
| Base 4 | 33013230114 | 33013230214 |
| Base 5 | 2232021325 | 2232021415 |
| Base 6 | 331233256 | 331233336 |
| Base 7 | 112646547 | 112646617 |
| Base 8 | 36173058 | 36173118 |
| Base 9 | 17702489 | 17702539 |
| Base 10 | 99091710 | 99092110 |
| Base 11 | 61754411 | 61754811 |
| Base 12 | 3b954512 | 3b954912 |
| Base 13 | 28905513 | 28905913 |
| Base 14 | 1bb19b14 | 1bb1a114 |
| Base 15 | 14891215 | 14891615 |
| Base 16 | f1ec516 | f1ec916 |