To determine if 1491 is a prime number or a composite number, we simply look at the factors for 1491.
If the factors of 1491 are only 1491 and 1, then we know that 1491 is a prime number. Otherwise, 1491 is a composite number.
To explain better, if 1491 is only divisible by 1 and 1491, then it is a prime number, and if 1491 is divisible by more than 1491 and 1, then it is a composite number.
The factors of 1491 are as follows:
1, 3, 7, 21, 71, 213, 497, 1491
Therefore, since 1491 is divisible by more than one and itself, the answer to the
question "Is 1491 prime or composite?" is highlighted in blue below.
composite
Is 1492 prime or composite?
OK. Now you know that 1491 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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