To determine if 556 is a prime number or a composite number, we simply look at the factors for 556.
If the factors of 556 are only 556 and 1, then we know that 556 is a prime number. Otherwise, 556 is a composite number.
To explain better, if 556 is only divisible by 1 and 556, then it is a prime number, and if 556 is divisible by more than 556 and 1, then it is a composite number.
The factors of 556 are as follows:
1, 2, 4, 139, 278, 556
Therefore, since 556 is divisible by more than one and itself, the answer to the
question "Is 556 prime or composite?" is highlighted in blue below.
composite
Is 557 prime or composite?
OK. Now you know that 556 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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