To determine if 3520 is a prime number or a composite number, we simply look at the factors for 3520.
If the factors of 3520 are only 3520 and 1, then we know that 3520 is a prime number. Otherwise, 3520 is a composite number.
To explain better, if 3520 is only divisible by 1 and 3520, then it is a prime number, and if 3520 is divisible by more than 3520 and 1, then it is a composite number.
The factors of 3520 are as follows:
1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 160, 176, 220, 320, 352, 440, 704, 880, 1760, 3520
Therefore, since 3520 is divisible by more than one and itself, the answer to the
question "Is 3520 prime or composite?" is highlighted in blue below.
composite
Is 3521 prime or composite?
OK. Now you know that 3520 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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