To determine if 1085 is a prime number or a composite number, we simply look at the factors for 1085.
If the factors of 1085 are only 1085 and 1, then we know that 1085 is a prime number. Otherwise, 1085 is a composite number.
To explain better, if 1085 is only divisible by 1 and 1085, then it is a prime number, and if 1085 is divisible by more than 1085 and 1, then it is a composite number.
The factors of 1085 are as follows:
1, 5, 7, 31, 35, 155, 217, 1085
Therefore, since 1085 is divisible by more than one and itself, the answer to the
question "Is 1085 prime or composite?" is highlighted in blue below.
composite
Is 1086 prime or composite?
OK. Now you know that 1085 is a composite number. Use our logic above and see if
you can figure out if the next number on our list is prime or composite before you check your answer.
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