To determine if 1578 is a prime number or a composite number, we simply look at the factors for 1578.
If the factors of 1578 are only 1578 and 1, then we know that 1578 is a prime number. Otherwise, 1578 is a composite number.
To explain better, if 1578 is only divisible by 1 and 1578, then it is a prime number, and if 1578 is divisible by more than 1578 and 1, then it is a composite number.
The factors of 1578 are as follows:
1, 2, 3, 6, 263, 526, 789, 1578
Therefore, since 1578 is divisible by more than one and itself, the answer to the
question "Is 1578 prime or composite?" is highlighted in blue below.
composite
Is 1579 prime or composite?
OK. Now you know that 1578 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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