To determine if 1921 is a prime number or a composite number, we simply look at the factors for 1921.
If the factors of 1921 are only 1921 and 1, then we know that 1921 is a prime number. Otherwise, 1921 is a composite number.
To explain better, if 1921 is only divisible by 1 and 1921, then it is a prime number, and if 1921 is divisible by more than 1921 and 1, then it is a composite number.
The factors of 1921 are as follows:
1, 17, 113, 1921
Therefore, since 1921 is divisible by more than one and itself, the answer to the
question "Is 1921 prime or composite?" is highlighted in blue below.
composite
Is 1922 prime or composite?
OK. Now you know that 1921 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.
|
|
