To determine if 1812 is a prime number or a composite number, we simply look at the factors for 1812.
If the factors of 1812 are only 1812 and 1, then we know that 1812 is a prime number. Otherwise, 1812 is a composite number.
To explain better, if 1812 is only divisible by 1 and 1812, then it is a prime number, and if 1812 is divisible by more than 1812 and 1, then it is a composite number.
The factors of 1812 are as follows:
1, 2, 3, 4, 6, 12, 151, 302, 453, 604, 906, 1812
Therefore, since 1812 is divisible by more than one and itself, the answer to the
question "Is 1812 prime or composite?" is highlighted in blue below.
composite
Is 1813 prime or composite?
OK. Now you know that 1812 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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