To determine if 4128 is a prime number or a composite number, we simply look at the factors for 4128.
If the factors of 4128 are only 4128 and 1, then we know that 4128 is a prime number. Otherwise, 4128 is a composite number.
To explain better, if 4128 is only divisible by 1 and 4128, then it is a prime number, and if 4128 is divisible by more than 4128 and 1, then it is a composite number.
The factors of 4128 are as follows:
1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 43, 48, 86, 96, 129, 172, 258, 344, 516, 688, 1032, 1376, 2064, 4128
Therefore, since 4128 is divisible by more than one and itself, the answer to the
question "Is 4128 prime or composite?" is highlighted in blue below.
composite
Is 4129 prime or composite?
OK. Now you know that 4128 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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