Compare 1881 vs 1889
| Property | 1881 | 1889 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 4 | 1 |
| Prime factorization | 32 × 111 × 191 | 18891 |
| Prime factorization | 3 × 3 × 11 × 19 | 1889 |
| Divisors count | 12 | 2 |
| Divisors | 1, 3, 9, 11, 19, 33, 57, 99, 171, 209, 627, 1881 | 1, 1889 |
| Number of properties | 0 | 5 |
| Chen primes | 178th | |
| Isolated primes | 175th | |
| Primes | 290th | |
| Pythagorean primes | 140th | |
| Sophie germain primes | 57th | |
| Roman numberals | MDCCCLXXXI | MDCCCLXXXIX |
| Base 2 | 111010110012 | 111011000012 |
| Base 3 | 21202003 | 21202223 |
| Base 4 | 1311214 | 1312014 |
| Base 5 | 300115 | 300245 |
| Base 6 | 124136 | 124256 |
| Base 7 | 53257 | 53367 |
| Base 8 | 35318 | 35418 |
| Base 9 | 25209 | 25289 |
| Base 10 | 188110 | 188910 |
| Base 11 | 146011 | 146811 |
| Base 12 | 110912 | 111512 |
| Base 13 | b1913 | b2413 |
| Base 14 | 98514 | 98d14 |
| Base 15 | 85615 | 85e15 |
| Base 16 | 75916 | 76116 |