Compare 19997 vs 20161
| Property | 19997 | 20161 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 199971 | 201611 |
| Prime factorization | 19997 | 20161 |
| Divisors count | 2 | 2 |
| Divisors | 1, 19997 | 1, 20161 |
| Number of properties | 9 | 5 |
| Centered decagonal primes | 34th | |
| Chen primes | 1112th | |
| Cousin primes (2nd member) | 344th | |
| Happy primes | 377th | |
| Harmonic primes | 821st | |
| Isolated primes | 1579th | 1594th |
| Primes | 2262nd | 2281st |
| Prime triplets (3rd member) | 168th | |
| Pythagorean primes | 1125th | 1134th |
| Sexy primes (2nd member) | 693rd | |
| Super primes | 339th | |
| Roman numberals | ||
| Base 2 | 1001110000111012 | 1001110110000012 |
| Base 3 | 10001021223 | 10001222013 |
| Base 4 | 103201314 | 103230014 |
| Base 5 | 11144425 | 11211215 |
| Base 6 | 2323256 | 2332016 |
| Base 7 | 1122057 | 1125317 |
| Base 8 | 470358 | 473018 |
| Base 9 | 303789 | 305819 |
| Base 10 | 1999710 | 2016110 |
| Base 11 | 1402a11 | 1416911 |
| Base 12 | b6a512 | b80112 |
| Base 13 | 914313 | 923b13 |
| Base 14 | 740514 | 74c114 |
| Base 15 | 5dd215 | 5e9115 |
| Base 16 | 4e1d16 | 4ec116 |