To determine if 859 is a prime number or a composite number, we simply look at the factors for 859.
If the factors of 859 are only 859 and 1, then we know that 859 is a prime number. Otherwise, 859 is a composite number.
To explain better, if 859 is only divisible by 1 and 859, then it is a prime number, and if 859 is divisible by more than 859 and 1, then it is a composite number.
The factors of 859 are as follows:
1, 859
Therefore, since 859 is divisible by only one and itself, the answer to the
question "Is 859 prime or composite?" is highlighted in blue below.
prime
Is 860 prime or composite?
OK. Now you know that 859 is a prime 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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