To determine if 9780 is a prime number or a composite number, we simply look at the factors for 9780.
If the factors of 9780 are only 9780 and 1, then we know that 9780 is a prime number. Otherwise, 9780 is a composite number.
To explain better, if 9780 is only divisible by 1 and 9780, then it is a prime number, and if 9780 is divisible by more than 9780 and 1, then it is a composite number.
The factors of 9780 are as follows:
1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 163, 326, 489, 652, 815, 978, 1630, 1956, 2445, 3260, 4890, 9780
Therefore, since 9780 is divisible by more than one and itself, the answer to the
question "Is 9780 prime or composite?" is highlighted in blue below.
composite
Is 9781 prime or composite?
OK. Now you know that 9780 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.
|
|
