Compare 1811 vs 1979
| Property | 1811 | 1979 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 18111 | 19791 |
| Prime factorization | 1811 | 1979 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1811 | 1, 1979 |
| Number of properties | 8 | 6 |
| Additive primes | 149th | |
| Chen primes | 184th | |
| Dihedral primes | 7th | |
| Emirps | 87th | 96th |
| Harmonic primes | 100th | |
| Isolated primes | 169th | 180th |
| Long primes | 109th | 116th |
| Primes | 280th | 299th |
| Sexy primes (2nd member) | 126th | |
| Sophie germain primes | 56th | |
| Roman numberals | MDCCCXI | MCMLXXIX |
| Base 2 | 111000100112 | 111101110112 |
| Base 3 | 21110023 | 22010223 |
| Base 4 | 1301034 | 1323234 |
| Base 5 | 242215 | 304045 |
| Base 6 | 122156 | 130556 |
| Base 7 | 51657 | 55257 |
| Base 8 | 34238 | 36738 |
| Base 9 | 24329 | 26389 |
| Base 10 | 181110 | 197910 |
| Base 11 | 13a711 | 153a11 |
| Base 12 | 106b12 | 118b12 |
| Base 13 | a9413 | b9313 |
| Base 14 | 93514 | a1514 |
| Base 15 | 80b15 | 8be15 |
| Base 16 | 71316 | 7bb16 |