To determine if 3215 is a prime number or a composite number, we simply look at the factors for 3215.
If the factors of 3215 are only 3215 and 1, then we know that 3215 is a prime number. Otherwise, 3215 is a composite number.
To explain better, if 3215 is only divisible by 1 and 3215, then it is a prime number, and if 3215 is divisible by more than 3215 and 1, then it is a composite number.
The factors of 3215 are as follows:
1, 5, 643, 3215
Therefore, since 3215 is divisible by more than one and itself, the answer to the
question "Is 3215 prime or composite?" is highlighted in blue below.
composite
Is 3216 prime or composite?
OK. Now you know that 3215 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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