To determine if 2020 is a prime number or a composite number, we simply look at the factors for 2020.
If the factors of 2020 are only 2020 and 1, then we know that 2020 is a prime number. Otherwise, 2020 is a composite number.
To explain better, if 2020 is only divisible by 1 and 2020, then it is a prime number, and if 2020 is divisible by more than 2020 and 1, then it is a composite number.
The factors of 2020 are as follows:
1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020
Therefore, since 2020 is divisible by more than one and itself, the answer to the
question "Is 2020 prime or composite?" is highlighted in blue below.
composite
Is 2021 prime or composite?
OK. Now you know that 2020 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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