Compare 19891 vs 19961
| Property | 19891 | 19961 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 198911 | 199611 |
| Prime factorization | 19891 | 19961 |
| Divisors count | 2 | 2 |
| Divisors | 1, 19891 | 1, 19961 |
| Number of properties | 4 | 5 |
| Chen primes | 1110th | |
| Good primes | 257th | |
| Harmonic primes | 815th | |
| Palindromic primes | 45th | |
| Primes | 2250th | 2256th |
| Pythagorean primes | 1122nd | |
| Twin primes (1st member) | 341st | |
| Twin primes (2nd member) | 340th | |
| Roman numberals | ||
| Base 2 | 1001101101100112 | 1001101111110012 |
| Base 3 | 10000212013 | 10001010223 |
| Base 4 | 103123034 | 103133214 |
| Base 5 | 11140315 | 11143215 |
| Base 6 | 2320316 | 2322256 |
| Base 7 | 1116647 | 1121247 |
| Base 8 | 466638 | 467718 |
| Base 9 | 302519 | 303389 |
| Base 10 | 1989110 | 1996110 |
| Base 11 | 13a4311 | 13aa711 |
| Base 12 | b61712 | b67512 |
| Base 13 | 909113 | 911613 |
| Base 14 | 736b14 | 73bb14 |
| Base 15 | 5d6115 | 5dab15 |
| Base 16 | 4db316 | 4df916 |