To determine if 1590 is a prime number or a composite number, we simply look at the factors for 1590.
If the factors of 1590 are only 1590 and 1, then we know that 1590 is a prime number. Otherwise, 1590 is a composite number.
To explain better, if 1590 is only divisible by 1 and 1590, then it is a prime number, and if 1590 is divisible by more than 1590 and 1, then it is a composite number.
The factors of 1590 are as follows:
1, 2, 3, 5, 6, 10, 15, 30, 53, 106, 159, 265, 318, 530, 795, 1590
Therefore, since 1590 is divisible by more than one and itself, the answer to the
question "Is 1590 prime or composite?" is highlighted in blue below.
composite
Is 1591 prime or composite?
OK. Now you know that 1590 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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