Compare 1281 vs 1283
Property | 1281 | 1283 |
---|---|---|
Type | composite number | prime |
Unique factors | 3 | 1 |
Total factors | 3 | 1 |
Prime factorization | 31 × 71 × 611 | 12831 |
Prime factorization | 3 × 7 × 61 | 1283 |
Divisors count | 8 | 2 |
Divisors | 1, 3, 7, 21, 61, 183, 427, 1281 | 1, 1283 |
Number of properties | 0 | 12 |
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 | MCCLXXXI | MCCLXXXIII |
Base 2 | 101000000012 | 101000000112 |
Base 3 | 12021103 | 12021123 |
Base 4 | 1100014 | 1100034 |
Base 5 | 201115 | 201135 |
Base 6 | 55336 | 55356 |
Base 7 | 35107 | 35127 |
Base 8 | 24018 | 24038 |
Base 9 | 16739 | 16759 |
Base 10 | 128110 | 128310 |
Base 11 | a6511 | a6711 |
Base 12 | 8a912 | 8ab12 |
Base 13 | 77713 | 77913 |
Base 14 | 67714 | 67914 |
Base 15 | 5a615 | 5a815 |
Base 16 | 50116 | 50316 |