To determine if 1040 is a prime number or a composite number, we simply look at the factors for 1040.
If the factors of 1040 are only 1040 and 1, then we know that 1040 is a prime number. Otherwise, 1040 is a composite number.
To explain better, if 1040 is only divisible by 1 and 1040, then it is a prime number, and if 1040 is divisible by more than 1040 and 1, then it is a composite number.
The factors of 1040 are as follows:
1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040
Therefore, since 1040 is divisible by more than one and itself, the answer to the
question "Is 1040 prime or composite?" is highlighted in blue below.
composite
Is 1041 prime or composite?
OK. Now you know that 1040 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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