Compare 991426 vs 991427
| Property | 991426 | 991427 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 21 × 4957131 | 9914271 |
| Prime factorization | 2 × 495713 | 991427 |
| Divisors count | 4 | 2 |
| Divisors | 1, 2, 495713, 991426 | 1, 991427 |
| Number of properties | 1 | 4 |
| Chen primes | 29733rd | |
| Primes | 77879th | |
| Safe primes | 4295th | |
| Semiprimes | 208333rd | |
| Twin primes (1st member) | 8110th | |
| Roman numberals | ||
| Base 2 | 111100100000110000102 | 111100100000110000112 |
| Base 3 | 12121002221113 | 12121002221123 |
| Base 4 | 33020030024 | 33020030034 |
| Base 5 | 2232112015 | 2232112025 |
| Base 6 | 331255346 | 331255356 |
| Base 7 | 112663127 | 112663137 |
| Base 8 | 36203028 | 36203038 |
| Base 9 | 17708749 | 17708759 |
| Base 10 | 99142610 | 99142710 |
| Base 11 | 61796711 | 61796811 |
| Base 12 | 3b98aa12 | 3b98ab12 |
| Base 13 | 28935713 | 28935813 |
| Base 14 | 1bb44214 | 1bb44314 |
| Base 15 | 148b5115 | 148b5215 |
| Base 16 | f20c216 | f20c316 |