Compare 1931 vs 1979
| Property | 1931 | 1979 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 19311 | 19791 |
| Prime factorization | 1931 | 1979 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1931 | 1, 1979 |
| Number of properties | 5 | 6 |
| Chen primes | 182nd | 184th |
| Emirps | 96th | |
| Harmonic primes | 108th | |
| Isolated primes | 180th | |
| Long primes | 116th | |
| Primes | 294th | 299th |
| Sexy primes (2nd member) | 126th | |
| Sophie germain primes | 59th | |
| Twin primes (1st member) | 59th | |
| Roman numberals | MCMXXXI | MCMLXXIX |
| Base 2 | 111100010112 | 111101110112 |
| Base 3 | 21221123 | 22010223 |
| Base 4 | 1320234 | 1323234 |
| Base 5 | 302115 | 304045 |
| Base 6 | 125356 | 130556 |
| Base 7 | 54267 | 55257 |
| Base 8 | 36138 | 36738 |
| Base 9 | 25759 | 26389 |
| Base 10 | 193110 | 197910 |
| Base 11 | 14a611 | 153a11 |
| Base 12 | 114b12 | 118b12 |
| Base 13 | b5713 | b9313 |
| Base 14 | 9bd14 | a1514 |
| Base 15 | 88b15 | 8be15 |
| Base 16 | 78b16 | 7bb16 |