To determine if 286 is a prime number or a composite number, we simply look at the factors for 286.
If the factors of 286 are only 286 and 1, then we know that 286 is a prime number. Otherwise, 286 is a composite number.
To explain better, if 286 is only divisible by 1 and 286, then it is a prime number, and if 286 is divisible by more than 286 and 1, then it is a composite number.
The factors of 286 are as follows:
1, 2, 11, 13, 22, 26, 143, 286
Therefore, since 286 is divisible by more than one and itself, the answer to the
question "Is 286 prime or composite?" is highlighted in blue below.
composite
Is 287 prime or composite?
OK. Now you know that 286 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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