Compare 9905 vs 9907
| Property | 9905 | 9907 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 51 × 71 × 2831 | 99071 |
| Prime factorization | 5 × 7 × 283 | 9907 |
| Divisors count | 8 | 2 |
| Divisors | 1, 5, 7, 35, 283, 1415, 1981, 9905 | 1, 9907 |
| Number of properties | 0 | 4 |
| Harmonic primes | 445th | |
| Isolated primes | 815th | |
| Primes | 1222nd | |
| Sexy primes (2nd member) | 409th | |
| Roman numberals | ||
| Base 2 | 100110101100012 | 100110101100112 |
| Base 3 | 1111202123 | 1111202213 |
| Base 4 | 21223014 | 21223034 |
| Base 5 | 3041105 | 3041125 |
| Base 6 | 1135056 | 1135116 |
| Base 7 | 406107 | 406127 |
| Base 8 | 232618 | 232638 |
| Base 9 | 145259 | 145279 |
| Base 10 | 990510 | 990710 |
| Base 11 | 749511 | 749711 |
| Base 12 | 589512 | 589712 |
| Base 13 | 467c13 | 468113 |
| Base 14 | 387714 | 387914 |
| Base 15 | 2e0515 | 2e0715 |
| Base 16 | 26b116 | 26b316 |