To determine if 2180 is a prime number or a composite number, we simply look at the factors for 2180.
If the factors of 2180 are only 2180 and 1, then we know that 2180 is a prime number. Otherwise, 2180 is a composite number.
To explain better, if 2180 is only divisible by 1 and 2180, then it is a prime number, and if 2180 is divisible by more than 2180 and 1, then it is a composite number.
The factors of 2180 are as follows:
1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180
Therefore, since 2180 is divisible by more than one and itself, the answer to the
question "Is 2180 prime or composite?" is highlighted in blue below.
composite
Is 2181 prime or composite?
OK. Now you know that 2180 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.
|
|
