To determine if 6378 is a prime number or a composite number, we simply look at the factors for 6378.
If the factors of 6378 are only 6378 and 1, then we know that 6378 is a prime number. Otherwise, 6378 is a composite number.
To explain better, if 6378 is only divisible by 1 and 6378, then it is a prime number, and if 6378 is divisible by more than 6378 and 1, then it is a composite number.
The factors of 6378 are as follows:
1, 2, 3, 6, 1063, 2126, 3189, 6378
Therefore, since 6378 is divisible by more than one and itself, the answer to the
question "Is 6378 prime or composite?" is highlighted in blue below.
composite
Is 6379 prime or composite?
OK. Now you know that 6378 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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