Compare 18911 vs 20161
| Property | 18911 | 20161 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 189111 | 201611 |
| Prime factorization | 18911 | 20161 |
| Divisors count | 2 | 2 |
| Divisors | 1, 18911 | 1, 20161 |
| Number of properties | 10 | 5 |
| Centered decagonal primes | 32nd | 34th |
| Chen primes | 1066th | |
| Emirps | 590th | |
| Good primes | 247th | |
| Harmonic primes | 775th | |
| Isolated primes | 1594th | |
| Primes | 2151st | 2281st |
| Prime quadruplets (1st member) | 18th | |
| Prime triplets (1st member) | 161st | |
| Pythagorean primes | 1134th | |
| Sexy primes (1st member) | 658th | |
| Super primes | 339th | |
| Twin primes (1st member) | 326th | |
| Roman numberals | ||
| Base 2 | 1001001110111112 | 1001110110000012 |
| Base 3 | 2212211023 | 10001222013 |
| Base 4 | 102131334 | 103230014 |
| Base 5 | 11011215 | 11211215 |
| Base 6 | 2233156 | 2332016 |
| Base 7 | 1060647 | 1125317 |
| Base 8 | 447378 | 473018 |
| Base 9 | 278429 | 305819 |
| Base 10 | 1891110 | 2016110 |
| Base 11 | 1323211 | 1416911 |
| Base 12 | ab3b12 | b80112 |
| Base 13 | 87b913 | 923b13 |
| Base 14 | 6c6b14 | 74c114 |
| Base 15 | 590b15 | 5e9115 |
| Base 16 | 49df16 | 4ec116 |