Compare 991421 vs 991427
| Property | 991421 | 991427 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 411 × 241811 | 9914271 |
| Prime factorization | 41 × 24181 | 991427 |
| Divisors count | 4 | 2 |
| Divisors | 1, 41, 24181, 991421 | 1, 991427 |
| Number of properties | 1 | 4 |
| Chen primes | 29733rd | |
| Primes | 77879th | |
| Safe primes | 4295th | |
| Semiprimes | 208332nd | |
| Twin primes (1st member) | 8110th | |
| Roman numberals | ||
| Base 2 | 111100100000101111012 | 111100100000110000112 |
| Base 3 | 12121002220223 | 12121002221123 |
| Base 4 | 33020023314 | 33020030034 |
| Base 5 | 2232111415 | 2232112025 |
| Base 6 | 331255256 | 331255356 |
| Base 7 | 112663047 | 112663137 |
| Base 8 | 36202758 | 36203038 |
| Base 9 | 17708689 | 17708759 |
| Base 10 | 99142110 | 99142710 |
| Base 11 | 61796211 | 61796811 |
| Base 12 | 3b98a512 | 3b98ab12 |
| Base 13 | 28935213 | 28935813 |
| Base 14 | 1bb43b14 | 1bb44314 |
| Base 15 | 148b4b15 | 148b5215 |
| Base 16 | f20bd16 | f20c316 |