Compare 1606 vs 1609
| Property | 1606 | 1609 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 21 × 111 × 731 | 16091 |
| Prime factorization | 2 × 11 × 73 | 1609 |
| Divisors count | 8 | 2 |
| Divisors | 1, 2, 11, 22, 73, 146, 803, 1606 | 1, 1609 |
| Number of properties | 0 | 6 |
| Cousin primes (1st member) | 58th | |
| Harmonic primes | 87th | |
| Primes | 254th | |
| Prime triplets (2nd member) | 42nd | |
| Pythagorean primes | 121st | |
| Twin primes (2nd member) | 51st | |
| Roman numberals | MDCVI | MDCIX |
| Base 2 | 110010001102 | 110010010012 |
| Base 3 | 20121113 | 20121213 |
| Base 4 | 1210124 | 1210214 |
| Base 5 | 224115 | 224145 |
| Base 6 | 112346 | 112416 |
| Base 7 | 44537 | 44567 |
| Base 8 | 31068 | 31118 |
| Base 9 | 21749 | 21779 |
| Base 10 | 160610 | 160910 |
| Base 11 | 123011 | 123311 |
| Base 12 | b1a12 | b2112 |
| Base 13 | 96713 | 96a13 |
| Base 14 | 82a14 | 82d14 |
| Base 15 | 72115 | 72415 |
| Base 16 | 64616 | 64916 |