Compare 1865 vs 1867
| Property | 1865 | 1867 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 51 × 3731 | 18671 |
| Prime factorization | 5 × 373 | 1867 |
| Divisors count | 4 | 2 |
| Divisors | 1, 5, 373, 1865 | 1, 1867 |
| Number of properties | 1 | 12 |
| Cousin primes (1st member) | 62nd | |
| Emirps | 90th | |
| Good primes | 59th | |
| Isolated primes | 174th | |
| Primes | 285th | |
| Prime quintuplet 1s (1st member) | 3rd | |
| Prime triplets (1st member) | 46th | |
| Semiprimes | 538th | |
| Sexy primes (1st member) | 121st | |
| Sexy primes (2nd member) | 120th | |
| Sexy prime quadrupletss (2nd member) | 12th | |
| Sexy prime triplets (1st member) | 48th | |
| Sexy prime triplets (2nd member) | 47th | |
| Roman numberals | MDCCCLXV | MDCCCLXVII |
| Base 2 | 111010010012 | 111010010112 |
| Base 3 | 21200023 | 21200113 |
| Base 4 | 1310214 | 1310234 |
| Base 5 | 244305 | 244325 |
| Base 6 | 123456 | 123516 |
| Base 7 | 53037 | 53057 |
| Base 8 | 35118 | 35138 |
| Base 9 | 25029 | 25049 |
| Base 10 | 186510 | 186710 |
| Base 11 | 144611 | 144811 |
| Base 12 | 10b512 | 10b712 |
| Base 13 | b0613 | b0813 |
| Base 14 | 97314 | 97514 |
| Base 15 | 84515 | 84715 |
| Base 16 | 74916 | 74b16 |