Compare 1801 vs 1889
| Property | 1801 | 1889 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 18011 | 18891 |
| Prime factorization | 1801 | 1889 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1801 | 1, 1889 |
| Number of properties | 7 | 5 |
| Chen primes | 174th | 178th |
| Cuban primes 1 | 13th | |
| Harmonic primes | 99th | |
| Isolated primes | 168th | 175th |
| Lucky primes | 66th | |
| Primes | 279th | 290th |
| Pythagorean primes | 136th | 140th |
| Sophie germain primes | 57th | |
| Roman numberals | MDCCCI | MDCCCLXXXIX |
| Base 2 | 111000010012 | 111011000012 |
| Base 3 | 21102013 | 21202223 |
| Base 4 | 1300214 | 1312014 |
| Base 5 | 242015 | 300245 |
| Base 6 | 122016 | 124256 |
| Base 7 | 51527 | 53367 |
| Base 8 | 34118 | 35418 |
| Base 9 | 24219 | 25289 |
| Base 10 | 180110 | 188910 |
| Base 11 | 139811 | 146811 |
| Base 12 | 106112 | 111512 |
| Base 13 | a8713 | b2413 |
| Base 14 | 92914 | 98d14 |
| Base 15 | 80115 | 85e15 |
| Base 16 | 70916 | 76116 |