To determine if 7640 is a prime number or a composite number, we simply look at the factors for 7640.
If the factors of 7640 are only 7640 and 1, then we know that 7640 is a prime number. Otherwise, 7640 is a composite number.
To explain better, if 7640 is only divisible by 1 and 7640, then it is a prime number, and if 7640 is divisible by more than 7640 and 1, then it is a composite number.
The factors of 7640 are as follows:
1, 2, 4, 5, 8, 10, 20, 40, 191, 382, 764, 955, 1528, 1910, 3820, 7640
Therefore, since 7640 is divisible by more than one and itself, the answer to the
question "Is 7640 prime or composite?" is highlighted in blue below.
composite
Is 7641 prime or composite?
OK. Now you know that 7640 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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