To determine if 2158 is a prime number or a composite number, we simply look at the factors for 2158.
If the factors of 2158 are only 2158 and 1, then we know that 2158 is a prime number. Otherwise, 2158 is a composite number.
To explain better, if 2158 is only divisible by 1 and 2158, then it is a prime number, and if 2158 is divisible by more than 2158 and 1, then it is a composite number.
The factors of 2158 are as follows:
1, 2, 13, 26, 83, 166, 1079, 2158
Therefore, since 2158 is divisible by more than one and itself, the answer to the
question "Is 2158 prime or composite?" is highlighted in blue below.
composite
Is 2159 prime or composite?
OK. Now you know that 2158 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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