Compare 1801 vs 1979
| Property | 1801 | 1979 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 18011 | 19791 |
| Prime factorization | 1801 | 1979 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1801 | 1, 1979 |
| Number of properties | 7 | 6 |
| Chen primes | 174th | 184th |
| Cuban primes 1 | 13th | |
| Emirps | 96th | |
| Harmonic primes | 99th | |
| Isolated primes | 168th | 180th |
| Long primes | 116th | |
| Lucky primes | 66th | |
| Primes | 279th | 299th |
| Pythagorean primes | 136th | |
| Sexy primes (2nd member) | 126th | |
| Roman numberals | MDCCCI | MCMLXXIX |
| Base 2 | 111000010012 | 111101110112 |
| Base 3 | 21102013 | 22010223 |
| Base 4 | 1300214 | 1323234 |
| Base 5 | 242015 | 304045 |
| Base 6 | 122016 | 130556 |
| Base 7 | 51527 | 55257 |
| Base 8 | 34118 | 36738 |
| Base 9 | 24219 | 26389 |
| Base 10 | 180110 | 197910 |
| Base 11 | 139811 | 153a11 |
| Base 12 | 106112 | 118b12 |
| Base 13 | a8713 | b9313 |
| Base 14 | 92914 | a1514 |
| Base 15 | 80115 | 8be15 |
| Base 16 | 70916 | 7bb16 |