Compare 18911 vs 19889
| Property | 18911 | 19889 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 189111 | 198891 |
| Prime factorization | 18911 | 19889 |
| Divisors count | 2 | 2 |
| Divisors | 1, 18911 | 1, 19889 |
| Number of properties | 10 | 8 |
| Centered decagonal primes | 32nd | |
| Chen primes | 1066th | 1106th |
| Emirps | 590th | |
| Good primes | 247th | 255th |
| Happy primes | 374th | |
| Harmonic primes | 775th | 814th |
| Primes | 2151st | 2249th |
| Prime quadruplets (1st member) | 18th | |
| Prime triplets (1st member) | 161st | |
| Pythagorean primes | 1118th | |
| Sexy primes (1st member) | 658th | |
| Sophie germain primes | 323rd | |
| Twin primes (1st member) | 326th | 340th |
| Roman numberals | ||
| Base 2 | 1001001110111112 | 1001101101100012 |
| Base 3 | 2212211023 | 10000211223 |
| Base 4 | 102131334 | 103123014 |
| Base 5 | 11011215 | 11140245 |
| Base 6 | 2233156 | 2320256 |
| Base 7 | 1060647 | 1116627 |
| Base 8 | 447378 | 466618 |
| Base 9 | 278429 | 302489 |
| Base 10 | 1891110 | 1988910 |
| Base 11 | 1323211 | 13a4111 |
| Base 12 | ab3b12 | b61512 |
| Base 13 | 87b913 | 908c13 |
| Base 14 | 6c6b14 | 736914 |
| Base 15 | 590b15 | 5d5e15 |
| Base 16 | 49df16 | 4db116 |