To determine if 1591 is a prime number or a composite number, we simply look at the factors for 1591.
If the factors of 1591 are only 1591 and 1, then we know that 1591 is a prime number. Otherwise, 1591 is a composite number.
To explain better, if 1591 is only divisible by 1 and 1591, then it is a prime number, and if 1591 is divisible by more than 1591 and 1, then it is a composite number.
The factors of 1591 are as follows:
1, 37, 43, 1591
Therefore, since 1591 is divisible by more than one and itself, the answer to the
question "Is 1591 prime or composite?" is highlighted in blue below.
composite
Is 1592 prime or composite?
OK. Now you know that 1591 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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