Compare 1601 vs 1609
| Property | 1601 | 1609 | 
|---|---|---|
| Type | prime | prime | 
| Unique factors | 1 | 1 | 
| Total factors | 1 | 1 | 
| Prime factorization | 16011 | 16091 | 
| Prime factorization | 1601 | 1609 | 
| Divisors count | 2 | 2 | 
| Divisors | 1, 1601 | 1, 1609 | 
| Number of properties | 12 | 6 | 
| Chen primes | 160th | |
| Cousin primes (1st member) | 58th | |
| Cousin primes (2nd member) | 57th | |
| Emirps | 78th | |
| Harmonic primes | 85th | 87th | 
| Isolated primes | 153rd | |
| Primes | 252nd | 254th | 
| Prime triplets (2nd member) | 42nd | |
| Proth primes | 21st | |
| Pythagorean primes | 120th | 121st | 
| Sexy primes (1st member) | 108th | |
| Sexy prime quadrupletss (1st member) | 10th | |
| Sexy prime triplets (1st member) | 41st | |
| Sophie germain primes | 54th | |
| Twin primes (2nd member) | 51st | |
| Roman numberals | MDCI | MDCIX | 
| Base 2 | 110010000012 | 110010010012 | 
| Base 3 | 20120223 | 20121213 | 
| Base 4 | 1210014 | 1210214 | 
| Base 5 | 224015 | 224145 | 
| Base 6 | 112256 | 112416 | 
| Base 7 | 44457 | 44567 | 
| Base 8 | 31018 | 31118 | 
| Base 9 | 21689 | 21779 | 
| Base 10 | 160110 | 160910 | 
| Base 11 | 122611 | 123311 | 
| Base 12 | b1512 | b2112 | 
| Base 13 | 96213 | 96a13 | 
| Base 14 | 82514 | 82d14 | 
| Base 15 | 71b15 | 72415 | 
| Base 16 | 64116 | 64916 |