To determine if 1553 is a prime number or a composite number, we simply look at the factors for 1553.
If the factors of 1553 are only 1553 and 1, then we know that 1553 is a prime number. Otherwise, 1553 is a composite number.
To explain better, if 1553 is only divisible by 1 and 1553, then it is a prime number, and if 1553 is divisible by more than 1553 and 1, then it is a composite number.
The factors of 1553 are as follows:
1, 1553
Therefore, since 1553 is divisible by only one and itself, the answer to the
question "Is 1553 prime or composite?" is highlighted in blue below.
prime
Is 1554 prime or composite?
OK. Now you know that 1553 is a prime 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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