To determine if 7819 is a prime number or a composite number, we simply look at the factors for 7819.
If the factors of 7819 are only 7819 and 1, then we know that 7819 is a prime number. Otherwise, 7819 is a composite number.
To explain better, if 7819 is only divisible by 1 and 7819, then it is a prime number, and if 7819 is divisible by more than 7819 and 1, then it is a composite number.
The factors of 7819 are as follows:
1, 7, 1117, 7819
Therefore, since 7819 is divisible by more than one and itself, the answer to the
question "Is 7819 prime or composite?" is highlighted in blue below.
composite
Is 7820 prime or composite?
OK. Now you know that 7819 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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