To determine if 1975 is a prime number or a composite number, we simply look at the factors for 1975.
If the factors of 1975 are only 1975 and 1, then we know that 1975 is a prime number. Otherwise, 1975 is a composite number.
To explain better, if 1975 is only divisible by 1 and 1975, then it is a prime number, and if 1975 is divisible by more than 1975 and 1, then it is a composite number.
The factors of 1975 are as follows:
1, 5, 25, 79, 395, 1975
Therefore, since 1975 is divisible by more than one and itself, the answer to the
question "Is 1975 prime or composite?" is highlighted in blue below.
composite
Is 1976 prime or composite?
OK. Now you know that 1975 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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