To determine if 2170 is a prime number or a composite number, we simply look at the factors for 2170.
If the factors of 2170 are only 2170 and 1, then we know that 2170 is a prime number. Otherwise, 2170 is a composite number.
To explain better, if 2170 is only divisible by 1 and 2170, then it is a prime number, and if 2170 is divisible by more than 2170 and 1, then it is a composite number.
The factors of 2170 are as follows:
1, 2, 5, 7, 10, 14, 31, 35, 62, 70, 155, 217, 310, 434, 1085, 2170
Therefore, since 2170 is divisible by more than one and itself, the answer to the
question "Is 2170 prime or composite?" is highlighted in blue below.
composite
Is 2171 prime or composite?
OK. Now you know that 2170 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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