To determine if 3855 is a prime number or a composite number, we simply look at the factors for 3855.
If the factors of 3855 are only 3855 and 1, then we know that 3855 is a prime number. Otherwise, 3855 is a composite number.
To explain better, if 3855 is only divisible by 1 and 3855, then it is a prime number, and if 3855 is divisible by more than 3855 and 1, then it is a composite number.
The factors of 3855 are as follows:
1, 3, 5, 15, 257, 771, 1285, 3855
Therefore, since 3855 is divisible by more than one and itself, the answer to the
question "Is 3855 prime or composite?" is highlighted in blue below.
composite
Is 3856 prime or composite?
OK. Now you know that 3855 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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