To determine if 9975 is a prime number or a composite number, we simply look at the factors for 9975.
If the factors of 9975 are only 9975 and 1, then we know that 9975 is a prime number. Otherwise, 9975 is a composite number.
To explain better, if 9975 is only divisible by 1 and 9975, then it is a prime number, and if 9975 is divisible by more than 9975 and 1, then it is a composite number.
The factors of 9975 are as follows:
1, 3, 5, 7, 15, 19, 21, 25, 35, 57, 75, 95, 105, 133, 175, 285, 399, 475, 525, 665, 1425, 1995, 3325, 9975
Therefore, since 9975 is divisible by more than one and itself, the answer to the
question "Is 9975 prime or composite?" is highlighted in blue below.
composite
Is 9976 prime or composite?
OK. Now you know that 9975 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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