To determine if 4215 is a prime number or a composite number, we simply look at the factors for 4215.
If the factors of 4215 are only 4215 and 1, then we know that 4215 is a prime number. Otherwise, 4215 is a composite number.
To explain better, if 4215 is only divisible by 1 and 4215, then it is a prime number, and if 4215 is divisible by more than 4215 and 1, then it is a composite number.
The factors of 4215 are as follows:
1, 3, 5, 15, 281, 843, 1405, 4215
Therefore, since 4215 is divisible by more than one and itself, the answer to the
question "Is 4215 prime or composite?" is highlighted in blue below.
composite
Is 4216 prime or composite?
OK. Now you know that 4215 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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