To determine if 580 is a prime number or a composite number, we simply look at the factors for 580.
If the factors of 580 are only 580 and 1, then we know that 580 is a prime number. Otherwise, 580 is a composite number.
To explain better, if 580 is only divisible by 1 and 580, then it is a prime number, and if 580 is divisible by more than 580 and 1, then it is a composite number.
The factors of 580 are as follows:
1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580
Therefore, since 580 is divisible by more than one and itself, the answer to the
question "Is 580 prime or composite?" is highlighted in blue below.
composite
Is 581 prime or composite?
OK. Now you know that 580 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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