To determine if 3857 is a prime number or a composite number, we simply look at the factors for 3857.
If the factors of 3857 are only 3857 and 1, then we know that 3857 is a prime number. Otherwise, 3857 is a composite number.
To explain better, if 3857 is only divisible by 1 and 3857, then it is a prime number, and if 3857 is divisible by more than 3857 and 1, then it is a composite number.
The factors of 3857 are as follows:
1, 7, 19, 29, 133, 203, 551, 3857
Therefore, since 3857 is divisible by more than one and itself, the answer to the
question "Is 3857 prime or composite?" is highlighted in blue below.
composite
Is 3858 prime or composite?
OK. Now you know that 3857 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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