To determine if 4890 is a prime number or a composite number, we simply look at the factors for 4890.
If the factors of 4890 are only 4890 and 1, then we know that 4890 is a prime number. Otherwise, 4890 is a composite number.
To explain better, if 4890 is only divisible by 1 and 4890, then it is a prime number, and if 4890 is divisible by more than 4890 and 1, then it is a composite number.
The factors of 4890 are as follows:
1, 2, 3, 5, 6, 10, 15, 30, 163, 326, 489, 815, 978, 1630, 2445, 4890
Therefore, since 4890 is divisible by more than one and itself, the answer to the
question "Is 4890 prime or composite?" is highlighted in blue below.
composite
Is 4891 prime or composite?
OK. Now you know that 4890 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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