To determine if 1642 is a prime number or a composite number, we simply look at the factors for 1642.
If the factors of 1642 are only 1642 and 1, then we know that 1642 is a prime number. Otherwise, 1642 is a composite number.
To explain better, if 1642 is only divisible by 1 and 1642, then it is a prime number, and if 1642 is divisible by more than 1642 and 1, then it is a composite number.
The factors of 1642 are as follows:
1, 2, 821, 1642
Therefore, since 1642 is divisible by more than one and itself, the answer to the
question "Is 1642 prime or composite?" is highlighted in blue below.
composite
Is 1643 prime or composite?
OK. Now you know that 1642 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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