Compare 19891 vs 19997
| Property | 19891 | 19997 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 198911 | 199971 |
| Prime factorization | 19891 | 19997 |
| Divisors count | 2 | 2 |
| Divisors | 1, 19891 | 1, 19997 |
| Number of properties | 4 | 9 |
| Chen primes | 1112th | |
| Cousin primes (2nd member) | 344th | |
| Happy primes | 377th | |
| Harmonic primes | 815th | 821st |
| Isolated primes | 1579th | |
| Palindromic primes | 45th | |
| Primes | 2250th | 2262nd |
| Prime triplets (3rd member) | 168th | |
| Pythagorean primes | 1125th | |
| Sexy primes (2nd member) | 693rd | |
| Twin primes (2nd member) | 340th | |
| Roman numberals | ||
| Base 2 | 1001101101100112 | 1001110000111012 |
| Base 3 | 10000212013 | 10001021223 |
| Base 4 | 103123034 | 103201314 |
| Base 5 | 11140315 | 11144425 |
| Base 6 | 2320316 | 2323256 |
| Base 7 | 1116647 | 1122057 |
| Base 8 | 466638 | 470358 |
| Base 9 | 302519 | 303789 |
| Base 10 | 1989110 | 1999710 |
| Base 11 | 13a4311 | 1402a11 |
| Base 12 | b61712 | b6a512 |
| Base 13 | 909113 | 914313 |
| Base 14 | 736b14 | 740514 |
| Base 15 | 5d6115 | 5dd215 |
| Base 16 | 4db316 | 4e1d16 |