To determine if 551 is a prime number or a composite number, we simply look at the factors for 551.
If the factors of 551 are only 551 and 1, then we know that 551 is a prime number. Otherwise, 551 is a composite number.
To explain better, if 551 is only divisible by 1 and 551, then it is a prime number, and if 551 is divisible by more than 551 and 1, then it is a composite number.
The factors of 551 are as follows:
1, 19, 29, 551
Therefore, since 551 is divisible by more than one and itself, the answer to the
question "Is 551 prime or composite?" is highlighted in blue below.
composite
Is 552 prime or composite?
OK. Now you know that 551 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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