Compare 1831 vs 1979
| Property | 1831 | 1979 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 18311 | 19791 |
| Prime factorization | 1831 | 1979 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1831 | 1, 1979 |
| Number of properties | 6 | 6 |
| Additive primes | 150th | |
| Chen primes | 184th | |
| Emirps | 88th | 96th |
| Harmonic primes | 101st | |
| Isolated primes | 171st | 180th |
| Long primes | 116th | |
| Lucky primes | 67th | |
| Primes | 282nd | 299th |
| Sexy primes (2nd member) | 126th | |
| Roman numberals | MDCCCXXXI | MCMLXXIX |
| Base 2 | 111001001112 | 111101110112 |
| Base 3 | 21112113 | 22010223 |
| Base 4 | 1302134 | 1323234 |
| Base 5 | 243115 | 304045 |
| Base 6 | 122516 | 130556 |
| Base 7 | 52247 | 55257 |
| Base 8 | 34478 | 36738 |
| Base 9 | 24549 | 26389 |
| Base 10 | 183110 | 197910 |
| Base 11 | 141511 | 153a11 |
| Base 12 | 108712 | 118b12 |
| Base 13 | aab13 | b9313 |
| Base 14 | 94b14 | a1514 |
| Base 15 | 82115 | 8be15 |
| Base 16 | 72716 | 7bb16 |