To determine if 786 is a prime number or a composite number, we simply look at the factors for 786.
If the factors of 786 are only 786 and 1, then we know that 786 is a prime number. Otherwise, 786 is a composite number.
To explain better, if 786 is only divisible by 1 and 786, then it is a prime number, and if 786 is divisible by more than 786 and 1, then it is a composite number.
The factors of 786 are as follows:
1, 2, 3, 6, 131, 262, 393, 786
Therefore, since 786 is divisible by more than one and itself, the answer to the
question "Is 786 prime or composite?" is highlighted in blue below.
composite
Is 787 prime or composite?
OK. Now you know that 786 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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