Compare 979 vs 991
| Property | 979 | 991 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 111 × 891 | 9911 |
| Prime factorization | 11 × 89 | 991 |
| Divisors count | 4 | 2 |
| Divisors | 1, 11, 89, 979 | 1, 991 |
| Number of properties | 1 | 10 |
| Additive primes | 89th | |
| Chen primes | 115th | |
| Emirps | 36th | |
| Isolated primes | 98th | |
| Lucky primes | 42nd | |
| Primes | 167th | |
| Semiprimes | 293rd | |
| Sexy primes (1st member) | 74th | |
| Solinas primes | 43rd | |
| Super primes | 39th | |
| Ulam primes | 18th | |
| Roman numberals | CMLXXIX | CMXCI |
| Base 2 | 11110100112 | 11110111112 |
| Base 3 | 11000213 | 11002013 |
| Base 4 | 331034 | 331334 |
| Base 5 | 124045 | 124315 |
| Base 6 | 43116 | 43316 |
| Base 7 | 25667 | 26147 |
| Base 8 | 17238 | 17378 |
| Base 9 | 13079 | 13219 |
| Base 10 | 97910 | 99110 |
| Base 11 | 81011 | 82111 |
| Base 12 | 69712 | 6a712 |
| Base 13 | 5a413 | 5b313 |
| Base 14 | 4dd14 | 50b14 |
| Base 15 | 45415 | 46115 |
| Base 16 | 3d316 | 3df16 |