Compare 19813 vs 19891
| Property | 19813 | 19891 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 198131 | 198911 |
| Prime factorization | 19813 | 19891 |
| Divisors count | 2 | 2 |
| Divisors | 1, 19813 | 1, 19891 |
| Number of properties | 6 | 4 |
| Emirps | 624th | |
| Harmonic primes | 811th | 815th |
| Isolated primes | 1567th | |
| Palindromic primes | 45th | |
| Primes | 2242nd | 2250th |
| Pythagorean primes | 1114th | |
| Sexy primes (1st member) | 689th | |
| Twin primes (2nd member) | 340th | |
| Roman numberals | ||
| Base 2 | 1001101011001012 | 1001101101100112 |
| Base 3 | 10000112113 | 10000212013 |
| Base 4 | 103112114 | 103123034 |
| Base 5 | 11132235 | 11140315 |
| Base 6 | 2314216 | 2320316 |
| Base 7 | 1115237 | 1116647 |
| Base 8 | 465458 | 466638 |
| Base 9 | 301549 | 302519 |
| Base 10 | 1981310 | 1989110 |
| Base 11 | 1398211 | 13a4311 |
| Base 12 | b57112 | b61712 |
| Base 13 | 903113 | 909113 |
| Base 14 | 731314 | 736b14 |
| Base 15 | 5d0d15 | 5d6115 |
| Base 16 | 4d6516 | 4db316 |