To determine if 2205 is a prime number or a composite number, we simply look at the factors for 2205.
If the factors of 2205 are only 2205 and 1, then we know that 2205 is a prime number. Otherwise, 2205 is a composite number.
To explain better, if 2205 is only divisible by 1 and 2205, then it is a prime number, and if 2205 is divisible by more than 2205 and 1, then it is a composite number.
The factors of 2205 are as follows:
1, 3, 5, 7, 9, 15, 21, 35, 45, 49, 63, 105, 147, 245, 315, 441, 735, 2205
Therefore, since 2205 is divisible by more than one and itself, the answer to the
question "Is 2205 prime or composite?" is highlighted in blue below.
composite
Is 2206 prime or composite?
OK. Now you know that 2205 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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