To determine if 1573 is a prime number or a composite number, we simply look at the factors for 1573.
If the factors of 1573 are only 1573 and 1, then we know that 1573 is a prime number. Otherwise, 1573 is a composite number.
To explain better, if 1573 is only divisible by 1 and 1573, then it is a prime number, and if 1573 is divisible by more than 1573 and 1, then it is a composite number.
The factors of 1573 are as follows:
1, 11, 13, 121, 143, 1573
Therefore, since 1573 is divisible by more than one and itself, the answer to the
question "Is 1573 prime or composite?" is highlighted in blue below.
composite
Is 1574 prime or composite?
OK. Now you know that 1573 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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