To determine if 9890 is a prime number or a composite number, we simply look at the factors for 9890.
If the factors of 9890 are only 9890 and 1, then we know that 9890 is a prime number. Otherwise, 9890 is a composite number.
To explain better, if 9890 is only divisible by 1 and 9890, then it is a prime number, and if 9890 is divisible by more than 9890 and 1, then it is a composite number.
The factors of 9890 are as follows:
1, 2, 5, 10, 23, 43, 46, 86, 115, 215, 230, 430, 989, 1978, 4945, 9890
Therefore, since 9890 is divisible by more than one and itself, the answer to the
question "Is 9890 prime or composite?" is highlighted in blue below.
composite
Is 9891 prime or composite?
OK. Now you know that 9890 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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