To determine if 1971 is a prime number or a composite number, we simply look at the factors for 1971.
If the factors of 1971 are only 1971 and 1, then we know that 1971 is a prime number. Otherwise, 1971 is a composite number.
To explain better, if 1971 is only divisible by 1 and 1971, then it is a prime number, and if 1971 is divisible by more than 1971 and 1, then it is a composite number.
The factors of 1971 are as follows:
1, 3, 9, 27, 73, 219, 657, 1971
Therefore, since 1971 is divisible by more than one and itself, the answer to the
question "Is 1971 prime or composite?" is highlighted in blue below.
composite
Is 1972 prime or composite?
OK. Now you know that 1971 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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