To determine if 811 is a prime number or a composite number, we simply look at the factors for 811.
If the factors of 811 are only 811 and 1, then we know that 811 is a prime number. Otherwise, 811 is a composite number.
To explain better, if 811 is only divisible by 1 and 811, then it is a prime number, and if 811 is divisible by more than 811 and 1, then it is a composite number.
The factors of 811 are as follows:
1, 811
Therefore, since 811 is divisible by only one and itself, the answer to the
question "Is 811 prime or composite?" is highlighted in blue below.
prime
Is 812 prime or composite?
OK. Now you know that 811 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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