To determine if 1721 is a prime number or a composite number, we simply look at the factors for 1721.
If the factors of 1721 are only 1721 and 1, then we know that 1721 is a prime number. Otherwise, 1721 is a composite number.
To explain better, if 1721 is only divisible by 1 and 1721, then it is a prime number, and if 1721 is divisible by more than 1721 and 1, then it is a composite number.
The factors of 1721 are as follows:
1, 1721
Therefore, since 1721 is divisible by only one and itself, the answer to the
question "Is 1721 prime or composite?" is highlighted in blue below.
prime
Is 1722 prime or composite?
OK. Now you know that 1721 is a prime 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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