To determine if 7620 is a prime number or a composite number, we simply look at the factors for 7620.
If the factors of 7620 are only 7620 and 1, then we know that 7620 is a prime number. Otherwise, 7620 is a composite number.
To explain better, if 7620 is only divisible by 1 and 7620, then it is a prime number, and if 7620 is divisible by more than 7620 and 1, then it is a composite number.
The factors of 7620 are as follows:
1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 127, 254, 381, 508, 635, 762, 1270, 1524, 1905, 2540, 3810, 7620
Therefore, since 7620 is divisible by more than one and itself, the answer to the
question "Is 7620 prime or composite?" is highlighted in blue below.
composite
Is 7621 prime or composite?
OK. Now you know that 7620 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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