Compare 991387 vs 991393
| Property | 991387 | 991393 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 9913871 | 131 × 762611 |
| Prime factorization | 991387 | 13 × 76261 |
| Divisors count | 2 | 4 |
| Divisors | 1, 991387 | 1, 13, 76261, 991393 |
| Number of properties | 5 | 1 |
| Additive primes | 29889th | |
| Isolated primes | 61660th | |
| Primes | 77877th | |
| Semiprimes | 208323rd | |
| Sexy primes (2nd member) | 16270th | |
| Ulam primes | 5712th | |
| Roman numberals | ||
| Base 2 | 111100100000100110112 | 111100100000101000012 |
| Base 3 | 12121002210013 | 12121002210213 |
| Base 4 | 33020021234 | 33020022014 |
| Base 5 | 2232110225 | 2232110335 |
| Base 6 | 331254316 | 331254416 |
| Base 7 | 112662257 | 112662347 |
| Base 8 | 36202338 | 36202418 |
| Base 9 | 17708319 | 17708379 |
| Base 10 | 99138710 | 99139310 |
| Base 11 | 61793111 | 61793711 |
| Base 12 | 3b987712 | 3b988112 |
| Base 13 | 28932713 | 28933013 |
| Base 14 | 1bb41514 | 1bb41b14 |
| Base 15 | 148b2715 | 148b2d15 |
| Base 16 | f209b16 | f20a116 |