To determine if 9870 is a prime number or a composite number, we simply look at the factors for 9870.
If the factors of 9870 are only 9870 and 1, then we know that 9870 is a prime number. Otherwise, 9870 is a composite number.
To explain better, if 9870 is only divisible by 1 and 9870, then it is a prime number, and if 9870 is divisible by more than 9870 and 1, then it is a composite number.
The factors of 9870 are as follows:
1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 47, 70, 94, 105, 141, 210, 235, 282, 329, 470, 658, 705, 987, 1410, 1645, 1974, 3290, 4935, 9870
Therefore, since 9870 is divisible by more than one and itself, the answer to the
question "Is 9870 prime or composite?" is highlighted in blue below.
composite
Is 9871 prime or composite?
OK. Now you know that 9870 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.
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