To determine if 6840 is a prime number or a composite number, we simply look at the factors for 6840.
If the factors of 6840 are only 6840 and 1, then we know that 6840 is a prime number. Otherwise, 6840 is a composite number.
To explain better, if 6840 is only divisible by 1 and 6840, then it is a prime number, and if 6840 is divisible by more than 6840 and 1, then it is a composite number.
The factors of 6840 are as follows:
1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 24, 30, 36, 38, 40, 45, 57, 60, 72, 76, 90, 95, 114, 120, 152, 171, 180, 190, 228, 285, 342, 360, 380, 456, 570, 684, 760, 855, 1140, 1368, 1710, 2280, 3420, 6840
Therefore, since 6840 is divisible by more than one and itself, the answer to the
question "Is 6840 prime or composite?" is highlighted in blue below.
composite
Is 6841 prime or composite?
OK. Now you know that 6840 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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