To determine if 2142 is a prime number or a composite number, we simply look at the factors for 2142.
If the factors of 2142 are only 2142 and 1, then we know that 2142 is a prime number. Otherwise, 2142 is a composite number.
To explain better, if 2142 is only divisible by 1 and 2142, then it is a prime number, and if 2142 is divisible by more than 2142 and 1, then it is a composite number.
The factors of 2142 are as follows:
1, 2, 3, 6, 7, 9, 14, 17, 18, 21, 34, 42, 51, 63, 102, 119, 126, 153, 238, 306, 357, 714, 1071, 2142
Therefore, since 2142 is divisible by more than one and itself, the answer to the
question "Is 2142 prime or composite?" is highlighted in blue below.
composite
Is 2143 prime or composite?
OK. Now you know that 2142 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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