To determine if 1225 is a prime number or a composite number, we simply look at the factors for 1225.
If the factors of 1225 are only 1225 and 1, then we know that 1225 is a prime number. Otherwise, 1225 is a composite number.
To explain better, if 1225 is only divisible by 1 and 1225, then it is a prime number, and if 1225 is divisible by more than 1225 and 1, then it is a composite number.
The factors of 1225 are as follows:
1, 5, 7, 25, 35, 49, 175, 245, 1225
Therefore, since 1225 is divisible by more than one and itself, the answer to the
question "Is 1225 prime or composite?" is highlighted in blue below.
composite
Is 1226 prime or composite?
OK. Now you know that 1225 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.
|
|
