Compare 845 vs 853
| Property | 845 | 853 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 2 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 51 × 132 | 8531 |
| Prime factorization | 5 × 13 × 13 | 853 |
| Divisors count | 6 | 2 |
| Divisors | 1, 5, 13, 65, 169, 845 | 1, 853 |
| Number of properties | 0 | 9 |
| Cousin primes (1st member) | 35th | |
| Good primes | 41st | |
| Harmonic primes | 55th | |
| Isolated primes | 82nd | |
| Left-truncatable primes | 47th | |
| Primes | 147th | |
| Prime triplets (1st member) | 27th | |
| Pythagorean primes | 71st | |
| Sexy primes (1st member) | 66th | |
| Roman numberals | DCCCXLV | DCCCLIII |
| Base 2 | 11010011012 | 11010101012 |
| Base 3 | 10110223 | 10111213 |
| Base 4 | 310314 | 311114 |
| Base 5 | 113405 | 114035 |
| Base 6 | 35256 | 35416 |
| Base 7 | 23157 | 23267 |
| Base 8 | 15158 | 15258 |
| Base 9 | 11389 | 11479 |
| Base 10 | 84510 | 85310 |
| Base 11 | 6a911 | 70611 |
| Base 12 | 5a512 | 5b112 |
| Base 13 | 50013 | 50813 |
| Base 14 | 44514 | 44d14 |
| Base 15 | 3b515 | 3bd15 |
| Base 16 | 34d16 | 35516 |