To determine if 1105 is a prime number or a composite number, we simply look at the factors for 1105.
If the factors of 1105 are only 1105 and 1, then we know that 1105 is a prime number. Otherwise, 1105 is a composite number.
To explain better, if 1105 is only divisible by 1 and 1105, then it is a prime number, and if 1105 is divisible by more than 1105 and 1, then it is a composite number.
The factors of 1105 are as follows:
1, 5, 13, 17, 65, 85, 221, 1105
Therefore, since 1105 is divisible by more than one and itself, the answer to the
question "Is 1105 prime or composite?" is highlighted in blue below.
composite
Is 1106 prime or composite?
OK. Now you know that 1105 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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