Compare 1889 vs 1891
| Property | 1889 | 1891 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 18891 | 311 × 611 |
| Prime factorization | 1889 | 31 × 61 |
| Divisors count | 2 | 4 |
| Divisors | 1, 1889 | 1, 31, 61, 1891 |
| Number of properties | 5 | 1 |
| Chen primes | 178th | |
| Isolated primes | 175th | |
| Primes | 290th | |
| Pythagorean primes | 140th | |
| Semiprimes | 542nd | |
| Sophie germain primes | 57th | |
| Roman numberals | MDCCCLXXXIX | MDCCCXCI |
| Base 2 | 111011000012 | 111011000112 |
| Base 3 | 21202223 | 21210013 |
| Base 4 | 1312014 | 1312034 |
| Base 5 | 300245 | 300315 |
| Base 6 | 124256 | 124316 |
| Base 7 | 53367 | 53417 |
| Base 8 | 35418 | 35438 |
| Base 9 | 25289 | 25319 |
| Base 10 | 188910 | 189110 |
| Base 11 | 146811 | 146a11 |
| Base 12 | 111512 | 111712 |
| Base 13 | b2413 | b2613 |
| Base 14 | 98d14 | 99114 |
| Base 15 | 85e15 | 86115 |
| Base 16 | 76116 | 76316 |