To determine if 1628 is a prime number or a composite number, we simply look at the factors for 1628.
If the factors of 1628 are only 1628 and 1, then we know that 1628 is a prime number. Otherwise, 1628 is a composite number.
To explain better, if 1628 is only divisible by 1 and 1628, then it is a prime number, and if 1628 is divisible by more than 1628 and 1, then it is a composite number.
The factors of 1628 are as follows:
1, 2, 4, 11, 22, 37, 44, 74, 148, 407, 814, 1628
Therefore, since 1628 is divisible by more than one and itself, the answer to the
question "Is 1628 prime or composite?" is highlighted in blue below.
composite
Is 1629 prime or composite?
OK. Now you know that 1628 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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