To determine if 3620 is a prime number or a composite number, we simply look at the factors for 3620.
If the factors of 3620 are only 3620 and 1, then we know that 3620 is a prime number. Otherwise, 3620 is a composite number.
To explain better, if 3620 is only divisible by 1 and 3620, then it is a prime number, and if 3620 is divisible by more than 3620 and 1, then it is a composite number.
The factors of 3620 are as follows:
1, 2, 4, 5, 10, 20, 181, 362, 724, 905, 1810, 3620
Therefore, since 3620 is divisible by more than one and itself, the answer to the
question "Is 3620 prime or composite?" is highlighted in blue below.
composite
Is 3621 prime or composite?
OK. Now you know that 3620 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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