Compare 1279 vs 1285
| Property | 1279 | 1285 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 12791 | 51 × 2571 |
| Prime factorization | 1279 | 5 × 257 |
| Divisors count | 2 | 4 |
| Divisors | 1, 1279 | 1, 5, 257, 1285 |
| Number of properties | 7 | 1 |
| Additive primes | 112th | |
| Cousin primes (1st member) | 46th | |
| Emirps | 60th | |
| Primes | 207th | |
| Prime triplets (2nd member) | 33rd | |
| Semiprimes | 378th | |
| Solinas primes | 53rd | |
| Twin primes (2nd member) | 43rd | |
| Roman numberals | MCCLXXIX | MCCLXXXV |
| Base 2 | 100111111112 | 101000001012 |
| Base 3 | 12021013 | 12021213 |
| Base 4 | 1033334 | 1100114 |
| Base 5 | 201045 | 201205 |
| Base 6 | 55316 | 55416 |
| Base 7 | 35057 | 35147 |
| Base 8 | 23778 | 24058 |
| Base 9 | 16719 | 16779 |
| Base 10 | 127910 | 128510 |
| Base 11 | a6311 | a6911 |
| Base 12 | 8a712 | 8b112 |
| Base 13 | 77513 | 77b13 |
| Base 14 | 67514 | 67b14 |
| Base 15 | 5a415 | 5aa15 |
| Base 16 | 4ff16 | 50516 |