Compare 1811 vs 1889
| Property | 1811 | 1889 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 18111 | 18891 |
| Prime factorization | 1811 | 1889 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1811 | 1, 1889 |
| Number of properties | 8 | 5 |
| Additive primes | 149th | |
| Chen primes | 178th | |
| Dihedral primes | 7th | |
| Emirps | 87th | |
| Harmonic primes | 100th | |
| Isolated primes | 169th | 175th |
| Long primes | 109th | |
| Primes | 280th | 290th |
| Pythagorean primes | 140th | |
| Sophie germain primes | 56th | 57th |
| Roman numberals | MDCCCXI | MDCCCLXXXIX |
| Base 2 | 111000100112 | 111011000012 |
| Base 3 | 21110023 | 21202223 |
| Base 4 | 1301034 | 1312014 |
| Base 5 | 242215 | 300245 |
| Base 6 | 122156 | 124256 |
| Base 7 | 51657 | 53367 |
| Base 8 | 34238 | 35418 |
| Base 9 | 24329 | 25289 |
| Base 10 | 181110 | 188910 |
| Base 11 | 13a711 | 146811 |
| Base 12 | 106b12 | 111512 |
| Base 13 | a9413 | b2413 |
| Base 14 | 93514 | 98d14 |
| Base 15 | 80b15 | 85e15 |
| Base 16 | 71316 | 76116 |