To determine if 2140 is a prime number or a composite number, we simply look at the factors for 2140.
If the factors of 2140 are only 2140 and 1, then we know that 2140 is a prime number. Otherwise, 2140 is a composite number.
To explain better, if 2140 is only divisible by 1 and 2140, then it is a prime number, and if 2140 is divisible by more than 2140 and 1, then it is a composite number.
The factors of 2140 are as follows:
1, 2, 4, 5, 10, 20, 107, 214, 428, 535, 1070, 2140
Therefore, since 2140 is divisible by more than one and itself, the answer to the
question "Is 2140 prime or composite?" is highlighted in blue below.
composite
Is 2141 prime or composite?
OK. Now you know that 2140 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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