Compare 990809 vs 990813
| Property | 990809 | 990813 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 9908091 | 31 × 3302711 |
| Prime factorization | 990809 | 3 × 330271 |
| Divisors count | 2 | 4 |
| Divisors | 1, 990809 | 1, 3, 330271, 990813 |
| Number of properties | 3 | 1 |
| Isolated primes | 61622nd | |
| Primes | 77835th | |
| Semiprimes | 208199th | |
| Sophie germain primes | 7680th | |
| Roman numberals | ||
| Base 2 | 111100011110010110012 | 111100011110010111012 |
| Base 3 | 12121000101223 | 12121000102103 |
| Base 4 | 33013211214 | 33013211314 |
| Base 5 | 2232012145 | 2232012235 |
| Base 6 | 331230256 | 331230336 |
| Base 7 | 112644417 | 112644457 |
| Base 8 | 36171318 | 36171358 |
| Base 9 | 17701189 | 17701239 |
| Base 10 | 99080910 | 99081310 |
| Base 11 | 61745611 | 61745a11 |
| Base 12 | 3b947512 | 3b947912 |
| Base 13 | 288ca113 | 288ca513 |
| Base 14 | 1bb12114 | 1bb12514 |
| Base 15 | 14888e15 | 14889315 |
| Base 16 | f1e5916 | f1e5d16 |