To determine if 191 is a prime number or a composite number, we simply look at the factors for 191.
If the factors of 191 are only 191 and 1, then we know that 191 is a prime number. Otherwise, 191 is a composite number.
To explain better, if 191 is only divisible by 1 and 191, then it is a prime number, and if 191 is divisible by more than 191 and 1, then it is a composite number.
The factors of 191 are as follows:
1, 191
Therefore, since 191 is divisible by only one and itself, the answer to the
question "Is 191 prime or composite?" is highlighted in blue below.
prime
Is 192 prime or composite?
OK. Now you know that 191 is a prime 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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