To determine if 7855 is a prime number or a composite number, we simply look at the factors for 7855.
If the factors of 7855 are only 7855 and 1, then we know that 7855 is a prime number. Otherwise, 7855 is a composite number.
To explain better, if 7855 is only divisible by 1 and 7855, then it is a prime number, and if 7855 is divisible by more than 7855 and 1, then it is a composite number.
The factors of 7855 are as follows:
1, 5, 1571, 7855
Therefore, since 7855 is divisible by more than one and itself, the answer to the
question "Is 7855 prime or composite?" is highlighted in blue below.
composite
Is 7856 prime or composite?
OK. Now you know that 7855 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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