Compare 1605 vs 1613
| Property | 1605 | 1613 | 
|---|---|---|
| Type | composite number | prime | 
| Unique factors | 3 | 1 | 
| Total factors | 3 | 1 | 
| Prime factorization | 31 × 51 × 1071 | 16131 | 
| Prime factorization | 3 × 5 × 107 | 1613 | 
| Divisors count | 8 | 2 | 
| Divisors | 1, 3, 5, 15, 107, 321, 535, 1605 | 1, 1613 | 
| Number of properties | 0 | 13 | 
| Additive primes | 136th | |
| Cousin primes (2nd member) | 58th | |
| Harmonic primes | 88th | |
| Isolated primes | 154th | |
| Left-truncatable primes | 60th | |
| Primes | 255th | |
| Prime triplets (3rd member) | 42nd | |
| Pythagorean primes | 122nd | |
| Sexy primes (1st member) | 110th | |
| Sexy primes (2nd member) | 109th | |
| Sexy prime quadrupletss (3rd member) | 10th | |
| Sexy prime triplets (2nd member) | 42nd | |
| Sexy prime triplets (3rd member) | 41st | |
| Roman numberals | MDCV | MDCXIII | 
| Base 2 | 110010001012 | 110010011012 | 
| Base 3 | 20121103 | 20122023 | 
| Base 4 | 1210114 | 1210314 | 
| Base 5 | 224105 | 224235 | 
| Base 6 | 112336 | 112456 | 
| Base 7 | 44527 | 44637 | 
| Base 8 | 31058 | 31158 | 
| Base 9 | 21739 | 21829 | 
| Base 10 | 160510 | 161310 | 
| Base 11 | 122a11 | 123711 | 
| Base 12 | b1912 | b2512 | 
| Base 13 | 96613 | 97113 | 
| Base 14 | 82914 | 83314 | 
| Base 15 | 72015 | 72815 | 
| Base 16 | 64516 | 64d16 |