To determine if 2191 is a prime number or a composite number, we simply look at the factors for 2191.
If the factors of 2191 are only 2191 and 1, then we know that 2191 is a prime number. Otherwise, 2191 is a composite number.
To explain better, if 2191 is only divisible by 1 and 2191, then it is a prime number, and if 2191 is divisible by more than 2191 and 1, then it is a composite number.
The factors of 2191 are as follows:
1, 7, 313, 2191
Therefore, since 2191 is divisible by more than one and itself, the answer to the
question "Is 2191 prime or composite?" is highlighted in blue below.
composite
Is 2192 prime or composite?
OK. Now you know that 2191 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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