To determine if 3100 is a prime number or a composite number, we simply look at the factors for 3100.
If the factors of 3100 are only 3100 and 1, then we know that 3100 is a prime number. Otherwise, 3100 is a composite number.
To explain better, if 3100 is only divisible by 1 and 3100, then it is a prime number, and if 3100 is divisible by more than 3100 and 1, then it is a composite number.
The factors of 3100 are as follows:
1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 100, 124, 155, 310, 620, 775, 1550, 3100
Therefore, since 3100 is divisible by more than one and itself, the answer to the
question "Is 3100 prime or composite?" is highlighted in blue below.
composite
Is 3101 prime or composite?
OK. Now you know that 3100 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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