To determine if 2220 is a prime number or a composite number, we simply look at the factors for 2220.
If the factors of 2220 are only 2220 and 1, then we know that 2220 is a prime number. Otherwise, 2220 is a composite number.
To explain better, if 2220 is only divisible by 1 and 2220, then it is a prime number, and if 2220 is divisible by more than 2220 and 1, then it is a composite number.
The factors of 2220 are as follows:
1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 37, 60, 74, 111, 148, 185, 222, 370, 444, 555, 740, 1110, 2220
Therefore, since 2220 is divisible by more than one and itself, the answer to the
question "Is 2220 prime or composite?" is highlighted in blue below.
composite
Is 2221 prime or composite?
OK. Now you know that 2220 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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