Compare 2161 vs 2221
| Property | 2161 | 2221 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 21611 | 22211 |
| Prime factorization | 2161 | 2221 |
| Divisors count | 2 | 2 |
| Divisors | 1, 2161 | 1, 2221 |
| Number of properties | 3 | 8 |
| Additive primes | 174th | |
| Happy primes | 59th | |
| Isolated primes | 193rd | 198th |
| Long primes | 129th | |
| Lucky primes | 74th | |
| Primes | 326th | 331st |
| Pythagorean primes | 159th | 161st |
| Super primes | 67th | |
| Roman numberals | MMCLXI | MMCCXXI |
| Base 2 | 1000011100012 | 1000101011012 |
| Base 3 | 22220013 | 100010213 |
| Base 4 | 2013014 | 2022314 |
| Base 5 | 321215 | 323415 |
| Base 6 | 140016 | 141416 |
| Base 7 | 62057 | 63227 |
| Base 8 | 41618 | 42558 |
| Base 9 | 28619 | 30379 |
| Base 10 | 216110 | 222110 |
| Base 11 | 169511 | 173a11 |
| Base 12 | 130112 | 135112 |
| Base 13 | ca313 | 101b13 |
| Base 14 | b0514 | b4914 |
| Base 15 | 99115 | 9d115 |
| Base 16 | 87116 | 8ad16 |