To determine if 3993 is a prime number or a composite number, we simply look at the factors for 3993.
If the factors of 3993 are only 3993 and 1, then we know that 3993 is a prime number. Otherwise, 3993 is a composite number.
To explain better, if 3993 is only divisible by 1 and 3993, then it is a prime number, and if 3993 is divisible by more than 3993 and 1, then it is a composite number.
The factors of 3993 are as follows:
1, 3, 11, 33, 121, 363, 1331, 3993
Therefore, since 3993 is divisible by more than one and itself, the answer to the
question "Is 3993 prime or composite?" is highlighted in blue below.
composite
Is 3994 prime or composite?
OK. Now you know that 3993 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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