Compare 1609 vs 1801
| Property | 1609 | 1801 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 16091 | 18011 |
| Prime factorization | 1609 | 1801 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1609 | 1, 1801 |
| Number of properties | 6 | 7 |
| Chen primes | 174th | |
| Cousin primes (1st member) | 58th | |
| Cuban primes 1 | 13th | |
| Harmonic primes | 87th | 99th |
| Isolated primes | 168th | |
| Lucky primes | 66th | |
| Primes | 254th | 279th |
| Prime triplets (2nd member) | 42nd | |
| Pythagorean primes | 121st | 136th |
| Twin primes (2nd member) | 51st | |
| Roman numberals | MDCIX | MDCCCI |
| Base 2 | 110010010012 | 111000010012 |
| Base 3 | 20121213 | 21102013 |
| Base 4 | 1210214 | 1300214 |
| Base 5 | 224145 | 242015 |
| Base 6 | 112416 | 122016 |
| Base 7 | 44567 | 51527 |
| Base 8 | 31118 | 34118 |
| Base 9 | 21779 | 24219 |
| Base 10 | 160910 | 180110 |
| Base 11 | 123311 | 139811 |
| Base 12 | b2112 | 106112 |
| Base 13 | 96a13 | a8713 |
| Base 14 | 82d14 | 92914 |
| Base 15 | 72415 | 80115 |
| Base 16 | 64916 | 70916 |