To determine if 7940 is a prime number or a composite number, we simply look at the factors for 7940.
If the factors of 7940 are only 7940 and 1, then we know that 7940 is a prime number. Otherwise, 7940 is a composite number.
To explain better, if 7940 is only divisible by 1 and 7940, then it is a prime number, and if 7940 is divisible by more than 7940 and 1, then it is a composite number.
The factors of 7940 are as follows:
1, 2, 4, 5, 10, 20, 397, 794, 1588, 1985, 3970, 7940
Therefore, since 7940 is divisible by more than one and itself, the answer to the
question "Is 7940 prime or composite?" is highlighted in blue below.
composite
Is 7941 prime or composite?
OK. Now you know that 7940 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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