Compare 990913 vs 990917
| Property | 990913 | 990917 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 4 | 1 |
| Total factors | 4 | 1 |
| Prime factorization | 71 × 111 × 171 × 7571 | 9909171 |
| Prime factorization | 7 × 11 × 17 × 757 | 990917 |
| Divisors count | 16 | 2 |
| Divisors | 1, 7, 11, 17, 77, 119, 187, 757, 1309, 5299, 8327, 12869, 58289, 90083, 141559, 990913 | 1, 990917 |
| Number of properties | 0 | 4 |
| Chen primes | 29725th | |
| Isolated primes | 61627th | |
| Primes | 77842nd | |
| Sexy primes (1st member) | 16259th | |
| Roman numberals | ||
| Base 2 | 111100011110110000012 | 111100011110110001012 |
| Base 3 | 12121000211113 | 12121000211223 |
| Base 4 | 33013230014 | 33013230114 |
| Base 5 | 2232021235 | 2232021325 |
| Base 6 | 331233216 | 331233256 |
| Base 7 | 112646507 | 112646547 |
| Base 8 | 36173018 | 36173058 |
| Base 9 | 17702449 | 17702489 |
| Base 10 | 99091310 | 99091710 |
| Base 11 | 61754011 | 61754411 |
| Base 12 | 3b954112 | 3b954512 |
| Base 13 | 28905113 | 28905513 |
| Base 14 | 1bb19714 | 1bb19b14 |
| Base 15 | 14890d15 | 14891215 |
| Base 16 | f1ec116 | f1ec516 |