To determine if 1531 is a prime number or a composite number, we simply look at the factors for 1531.
If the factors of 1531 are only 1531 and 1, then we know that 1531 is a prime number. Otherwise, 1531 is a composite number.
To explain better, if 1531 is only divisible by 1 and 1531, then it is a prime number, and if 1531 is divisible by more than 1531 and 1, then it is a composite number.
The factors of 1531 are as follows:
1, 1531
Therefore, since 1531 is divisible by only one and itself, the answer to the
question "Is 1531 prime or composite?" is highlighted in blue below.
prime
Is 1532 prime or composite?
OK. Now you know that 1531 is a prime 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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