Compare 991399 vs 991409
| Property | 991399 | 991409 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 671 × 147971 | 9914091 |
| Prime factorization | 67 × 14797 | 991409 |
| Divisors count | 4 | 2 |
| Divisors | 1, 67, 14797, 991399 | 1, 991409 |
| Number of properties | 1 | 3 |
| Chen primes | 29732nd | |
| Isolated primes | 61661st | |
| Primes | 77878th | |
| Semiprimes | 208325th | |
| Roman numberals | ||
| Base 2 | 111100100000101001112 | 111100100000101100012 |
| Base 3 | 12121002211113 | 12121002212123 |
| Base 4 | 33020022134 | 33020023014 |
| Base 5 | 2232110445 | 2232111145 |
| Base 6 | 331254516 | 331255056 |
| Base 7 | 112662437 | 112662567 |
| Base 8 | 36202478 | 36202618 |
| Base 9 | 17708449 | 17708559 |
| Base 10 | 99139910 | 99140910 |
| Base 11 | 61794211 | 61795111 |
| Base 12 | 3b988712 | 3b989512 |
| Base 13 | 28933613 | 28934313 |
| Base 14 | 1bb42314 | 1bb42d14 |
| Base 15 | 148b3415 | 148b3e15 |
| Base 16 | f20a716 | f20b116 |