To determine if 525 is a prime number or a composite number, we simply look at the factors for 525.
If the factors of 525 are only 525 and 1, then we know that 525 is a prime number. Otherwise, 525 is a composite number.
To explain better, if 525 is only divisible by 1 and 525, then it is a prime number, and if 525 is divisible by more than 525 and 1, then it is a composite number.
The factors of 525 are as follows:
1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 175, 525
Therefore, since 525 is divisible by more than one and itself, the answer to the
question "Is 525 prime or composite?" is highlighted in blue below.
composite
Is 526 prime or composite?
OK. Now you know that 525 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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