To determine if 9900 is a prime number or a composite number, we simply look at the factors for 9900.
If the factors of 9900 are only 9900 and 1, then we know that 9900 is a prime number. Otherwise, 9900 is a composite number.
To explain better, if 9900 is only divisible by 1 and 9900, then it is a prime number, and if 9900 is divisible by more than 9900 and 1, then it is a composite number.
The factors of 9900 are as follows:
1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 25, 30, 33, 36, 44, 45, 50, 55, 60, 66, 75, 90, 99, 100, 110, 132, 150, 165, 180, 198, 220, 225, 275, 300, 330, 396, 450, 495, 550, 660, 825, 900, 990, 1100, 1650, 1980, 2475, 3300, 4950, 9900
Therefore, since 9900 is divisible by more than one and itself, the answer to the
question "Is 9900 prime or composite?" is highlighted in blue below.
composite
Is 9901 prime or composite?
OK. Now you know that 9900 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.
|
|