Compare 1801 vs 2221
| Property | 1801 | 2221 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 18011 | 22211 |
| Prime factorization | 1801 | 2221 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1801 | 1, 2221 |
| Number of properties | 7 | 8 |
| Additive primes | 174th | |
| Chen primes | 174th | |
| Cuban primes 1 | 13th | |
| Happy primes | 59th | |
| Harmonic primes | 99th | |
| Isolated primes | 168th | 198th |
| Long primes | 129th | |
| Lucky primes | 66th | 74th |
| Primes | 279th | 331st |
| Pythagorean primes | 136th | 161st |
| Super primes | 67th | |
| Roman numberals | MDCCCI | MMCCXXI |
| Base 2 | 111000010012 | 1000101011012 |
| Base 3 | 21102013 | 100010213 |
| Base 4 | 1300214 | 2022314 |
| Base 5 | 242015 | 323415 |
| Base 6 | 122016 | 141416 |
| Base 7 | 51527 | 63227 |
| Base 8 | 34118 | 42558 |
| Base 9 | 24219 | 30379 |
| Base 10 | 180110 | 222110 |
| Base 11 | 139811 | 173a11 |
| Base 12 | 106112 | 135112 |
| Base 13 | a8713 | 101b13 |
| Base 14 | 92914 | b4914 |
| Base 15 | 80115 | 9d115 |
| Base 16 | 70916 | 8ad16 |