To determine if 1218 is a prime number or a composite number, we simply look at the factors for 1218.
If the factors of 1218 are only 1218 and 1, then we know that 1218 is a prime number. Otherwise, 1218 is a composite number.
To explain better, if 1218 is only divisible by 1 and 1218, then it is a prime number, and if 1218 is divisible by more than 1218 and 1, then it is a composite number.
The factors of 1218 are as follows:
1, 2, 3, 6, 7, 14, 21, 29, 42, 58, 87, 174, 203, 406, 609, 1218
Therefore, since 1218 is divisible by more than one and itself, the answer to the
question "Is 1218 prime or composite?" is highlighted in blue below.
composite
Is 1219 prime or composite?
OK. Now you know that 1218 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.
|
|
