Compare 1979 vs 1985
| Property | 1979 | 1985 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 19791 | 51 × 3971 |
| Prime factorization | 1979 | 5 × 397 |
| Divisors count | 2 | 4 |
| Divisors | 1, 1979 | 1, 5, 397, 1985 |
| Number of properties | 6 | 1 |
| Chen primes | 184th | |
| Emirps | 96th | |
| Isolated primes | 180th | |
| Long primes | 116th | |
| Primes | 299th | |
| Semiprimes | 575th | |
| Sexy primes (2nd member) | 126th | |
| Roman numberals | MCMLXXIX | MCMLXXXV |
| Base 2 | 111101110112 | 111110000012 |
| Base 3 | 22010223 | 22011123 |
| Base 4 | 1323234 | 1330014 |
| Base 5 | 304045 | 304205 |
| Base 6 | 130556 | 131056 |
| Base 7 | 55257 | 55347 |
| Base 8 | 36738 | 37018 |
| Base 9 | 26389 | 26459 |
| Base 10 | 197910 | 198510 |
| Base 11 | 153a11 | 154511 |
| Base 12 | 118b12 | 119512 |
| Base 13 | b9313 | b9913 |
| Base 14 | a1514 | a1b14 |
| Base 15 | 8be15 | 8c515 |
| Base 16 | 7bb16 | 7c116 |