Compare 1283 vs 1290
| Property | 1283 | 1290 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 4 |
| Total factors | 1 | 4 |
| Prime factorization | 12831 | 21 × 31 × 51 × 431 |
| Prime factorization | 1283 | 2 × 3 × 5 × 43 |
| Divisors count | 2 | 16 |
| Divisors | 1, 1283 | 1, 2, 3, 5, 6, 10, 15, 30, 43, 86, 129, 215, 258, 430, 645, 1290 |
| Number of properties | 12 | 0 |
| Chen primes | 135th | |
| Cousin primes (2nd member) | 46th | |
| Emirps | 61st | |
| Harmonic primes | 72nd | |
| Isolated primes | 123rd | |
| Left-truncatable primes | 56th | |
| Primes | 208th | |
| Prime triplets (3rd member) | 33rd | |
| Safe primes | 28th | |
| Sexy primes (1st member) | 90th | |
| Sexy primes (2nd member) | 89th | |
| Sexy prime triplets (2nd member) | 34th | |
| Roman numberals | MCCLXXXIII | MCCXC |
| Base 2 | 101000000112 | 101000010102 |
| Base 3 | 12021123 | 12022103 |
| Base 4 | 1100034 | 1100224 |
| Base 5 | 201135 | 201305 |
| Base 6 | 55356 | 55506 |
| Base 7 | 35127 | 35227 |
| Base 8 | 24038 | 24128 |
| Base 9 | 16759 | 16839 |
| Base 10 | 128310 | 129010 |
| Base 11 | a6711 | a7311 |
| Base 12 | 8ab12 | 8b612 |
| Base 13 | 77913 | 78313 |
| Base 14 | 67914 | 68214 |
| Base 15 | 5a815 | 5b015 |
| Base 16 | 50316 | 50a16 |