To determine if 3930 is a prime number or a composite number, we simply look at the factors for 3930.
If the factors of 3930 are only 3930 and 1, then we know that 3930 is a prime number. Otherwise, 3930 is a composite number.
To explain better, if 3930 is only divisible by 1 and 3930, then it is a prime number, and if 3930 is divisible by more than 3930 and 1, then it is a composite number.
The factors of 3930 are as follows:
1, 2, 3, 5, 6, 10, 15, 30, 131, 262, 393, 655, 786, 1310, 1965, 3930
Therefore, since 3930 is divisible by more than one and itself, the answer to the
question "Is 3930 prime or composite?" is highlighted in blue below.
composite
Is 3931 prime or composite?
OK. Now you know that 3930 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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