To determine if 2156 is a prime number or a composite number, we simply look at the factors for 2156.
If the factors of 2156 are only 2156 and 1, then we know that 2156 is a prime number. Otherwise, 2156 is a composite number.
To explain better, if 2156 is only divisible by 1 and 2156, then it is a prime number, and if 2156 is divisible by more than 2156 and 1, then it is a composite number.
The factors of 2156 are as follows:
1, 2, 4, 7, 11, 14, 22, 28, 44, 49, 77, 98, 154, 196, 308, 539, 1078, 2156
Therefore, since 2156 is divisible by more than one and itself, the answer to the
question "Is 2156 prime or composite?" is highlighted in blue below.
composite
Is 2157 prime or composite?
OK. Now you know that 2156 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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