To determine if 3121 is a prime number or a composite number, we simply look at the factors for 3121.
If the factors of 3121 are only 3121 and 1, then we know that 3121 is a prime number. Otherwise, 3121 is a composite number.
To explain better, if 3121 is only divisible by 1 and 3121, then it is a prime number, and if 3121 is divisible by more than 3121 and 1, then it is a composite number.
The factors of 3121 are as follows:
1, 3121
Therefore, since 3121 is divisible by only one and itself, the answer to the
question "Is 3121 prime or composite?" is highlighted in blue below.
prime
Is 3122 prime or composite?
OK. Now you know that 3121 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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