To determine if 1577 is a prime number or a composite number, we simply look at the factors for 1577.
If the factors of 1577 are only 1577 and 1, then we know that 1577 is a prime number. Otherwise, 1577 is a composite number.
To explain better, if 1577 is only divisible by 1 and 1577, then it is a prime number, and if 1577 is divisible by more than 1577 and 1, then it is a composite number.
The factors of 1577 are as follows:
1, 19, 83, 1577
Therefore, since 1577 is divisible by more than one and itself, the answer to the
question "Is 1577 prime or composite?" is highlighted in blue below.
composite
Is 1578 prime or composite?
OK. Now you know that 1577 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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