To determine if 6390 is a prime number or a composite number, we simply look at the factors for 6390.
If the factors of 6390 are only 6390 and 1, then we know that 6390 is a prime number. Otherwise, 6390 is a composite number.
To explain better, if 6390 is only divisible by 1 and 6390, then it is a prime number, and if 6390 is divisible by more than 6390 and 1, then it is a composite number.
The factors of 6390 are as follows:
1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 71, 90, 142, 213, 355, 426, 639, 710, 1065, 1278, 2130, 3195, 6390
Therefore, since 6390 is divisible by more than one and itself, the answer to the
question "Is 6390 prime or composite?" is highlighted in blue below.
composite
Is 6391 prime or composite?
OK. Now you know that 6390 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.
|
|
