Compare 827 vs 991
| Property | 827 | 991 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 8271 | 9911 |
| Prime factorization | 827 | 991 |
| Divisors count | 2 | 2 |
| Divisors | 1, 827 | 1, 991 |
| Number of properties | 9 | 10 |
| Additive primes | 77th | 89th |
| Chen primes | 98th | 115th |
| Cousin primes (2nd member) | 34th | |
| Emirps | 36th | |
| Isolated primes | 98th | |
| Lucky primes | 42nd | |
| Primes | 144th | 167th |
| Prime quadruplets (3rd member) | 5th | |
| Prime triplets (2nd member) | 26th | |
| Prime triplets (3rd member) | 25th | |
| Sexy primes (1st member) | 74th | |
| Sexy primes (2nd member) | 64th | |
| Solinas primes | 43rd | |
| Super primes | 39th | |
| Twin primes (1st member) | 33rd | |
| Ulam primes | 18th | |
| Roman numberals | DCCCXXVII | CMXCI |
| Base 2 | 11001110112 | 11110111112 |
| Base 3 | 10101223 | 11002013 |
| Base 4 | 303234 | 331334 |
| Base 5 | 113025 | 124315 |
| Base 6 | 34556 | 43316 |
| Base 7 | 22617 | 26147 |
| Base 8 | 14738 | 17378 |
| Base 9 | 11189 | 13219 |
| Base 10 | 82710 | 99110 |
| Base 11 | 69211 | 82111 |
| Base 12 | 58b12 | 6a712 |
| Base 13 | 4b813 | 5b313 |
| Base 14 | 43114 | 50b14 |
| Base 15 | 3a215 | 46115 |
| Base 16 | 33b16 | 3df16 |