To determine if 1970 is a prime number or a composite number, we simply look at the factors for 1970.
If the factors of 1970 are only 1970 and 1, then we know that 1970 is a prime number. Otherwise, 1970 is a composite number.
To explain better, if 1970 is only divisible by 1 and 1970, then it is a prime number, and if 1970 is divisible by more than 1970 and 1, then it is a composite number.
The factors of 1970 are as follows:
1, 2, 5, 10, 197, 394, 985, 1970
Therefore, since 1970 is divisible by more than one and itself, the answer to the
question "Is 1970 prime or composite?" is highlighted in blue below.
composite
Is 1971 prime or composite?
OK. Now you know that 1970 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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