To determine if 1538 is a prime number or a composite number, we simply look at the factors for 1538.
If the factors of 1538 are only 1538 and 1, then we know that 1538 is a prime number. Otherwise, 1538 is a composite number.
To explain better, if 1538 is only divisible by 1 and 1538, then it is a prime number, and if 1538 is divisible by more than 1538 and 1, then it is a composite number.
The factors of 1538 are as follows:
1, 2, 769, 1538
Therefore, since 1538 is divisible by more than one and itself, the answer to the
question "Is 1538 prime or composite?" is highlighted in blue below.
composite
Is 1539 prime or composite?
OK. Now you know that 1538 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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