Compare 1279 vs 1287
| Property | 1279 | 1287 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 4 |
| Prime factorization | 12791 | 32 × 111 × 131 |
| Prime factorization | 1279 | 3 × 3 × 11 × 13 |
| Divisors count | 2 | 12 |
| Divisors | 1, 1279 | 1, 3, 9, 11, 13, 33, 39, 99, 117, 143, 429, 1287 |
| Number of properties | 7 | 0 |
| Additive primes | 112th | |
| Cousin primes (1st member) | 46th | |
| Emirps | 60th | |
| Primes | 207th | |
| Prime triplets (2nd member) | 33rd | |
| Solinas primes | 53rd | |
| Twin primes (2nd member) | 43rd | |
| Roman numberals | MCCLXXIX | MCCLXXXVII |
| Base 2 | 100111111112 | 101000001112 |
| Base 3 | 12021013 | 12022003 |
| Base 4 | 1033334 | 1100134 |
| Base 5 | 201045 | 201225 |
| Base 6 | 55316 | 55436 |
| Base 7 | 35057 | 35167 |
| Base 8 | 23778 | 24078 |
| Base 9 | 16719 | 16809 |
| Base 10 | 127910 | 128710 |
| Base 11 | a6311 | a7011 |
| Base 12 | 8a712 | 8b312 |
| Base 13 | 77513 | 78013 |
| Base 14 | 67514 | 67d14 |
| Base 15 | 5a415 | 5ac15 |
| Base 16 | 4ff16 | 50716 |