To determine if 7857 is a prime number or a composite number, we simply look at the factors for 7857.
If the factors of 7857 are only 7857 and 1, then we know that 7857 is a prime number. Otherwise, 7857 is a composite number.
To explain better, if 7857 is only divisible by 1 and 7857, then it is a prime number, and if 7857 is divisible by more than 7857 and 1, then it is a composite number.
The factors of 7857 are as follows:
1, 3, 9, 27, 81, 97, 291, 873, 2619, 7857
Therefore, since 7857 is divisible by more than one and itself, the answer to the
question "Is 7857 prime or composite?" is highlighted in blue below.
composite
Is 7858 prime or composite?
OK. Now you know that 7857 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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