To determine if 1563 is a prime number or a composite number, we simply look at the factors for 1563.
If the factors of 1563 are only 1563 and 1, then we know that 1563 is a prime number. Otherwise, 1563 is a composite number.
To explain better, if 1563 is only divisible by 1 and 1563, then it is a prime number, and if 1563 is divisible by more than 1563 and 1, then it is a composite number.
The factors of 1563 are as follows:
1, 3, 521, 1563
Therefore, since 1563 is divisible by more than one and itself, the answer to the
question "Is 1563 prime or composite?" is highlighted in blue below.
composite
Is 1564 prime or composite?
OK. Now you know that 1563 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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