To determine if 2019 is a prime number or a composite number, we simply look at the factors for 2019.
If the factors of 2019 are only 2019 and 1, then we know that 2019 is a prime number. Otherwise, 2019 is a composite number.
To explain better, if 2019 is only divisible by 1 and 2019, then it is a prime number, and if 2019 is divisible by more than 2019 and 1, then it is a composite number.
The factors of 2019 are as follows:
1, 3, 673, 2019
Therefore, since 2019 is divisible by more than one and itself, the answer to the
question "Is 2019 prime or composite?" is highlighted in blue below.
composite
Is 2020 prime or composite?
OK. Now you know that 2019 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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