Compare 991427 vs 991439
| Property | 991427 | 991439 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 9914271 | 191 × 521811 |
| Prime factorization | 991427 | 19 × 52181 |
| Divisors count | 2 | 4 |
| Divisors | 1, 991427 | 1, 19, 52181, 991439 |
| Number of properties | 4 | 1 |
| Chen primes | 29733rd | |
| Primes | 77879th | |
| Safe primes | 4295th | |
| Semiprimes | 208335th | |
| Twin primes (1st member) | 8110th | |
| Roman numberals | ||
| Base 2 | 111100100000110000112 | 111100100000110011112 |
| Base 3 | 12121002221123 | 12121002222223 |
| Base 4 | 33020030034 | 33020030334 |
| Base 5 | 2232112025 | 2232112245 |
| Base 6 | 331255356 | 331255556 |
| Base 7 | 112663137 | 112663317 |
| Base 8 | 36203038 | 36203178 |
| Base 9 | 17708759 | 17708889 |
| Base 10 | 99142710 | 99143910 |
| Base 11 | 61796811 | 61797911 |
| Base 12 | 3b98ab12 | 3b98bb12 |
| Base 13 | 28935813 | 28936713 |
| Base 14 | 1bb44314 | 1bb45114 |
| Base 15 | 148b5215 | 148b5e15 |
| Base 16 | f20c316 | f20cf16 |