To determine if 2445 is a prime number or a composite number, we simply look at the factors for 2445.
If the factors of 2445 are only 2445 and 1, then we know that 2445 is a prime number. Otherwise, 2445 is a composite number.
To explain better, if 2445 is only divisible by 1 and 2445, then it is a prime number, and if 2445 is divisible by more than 2445 and 1, then it is a composite number.
The factors of 2445 are as follows:
1, 3, 5, 15, 163, 489, 815, 2445
Therefore, since 2445 is divisible by more than one and itself, the answer to the
question "Is 2445 prime or composite?" is highlighted in blue below.
composite
Is 2446 prime or composite?
OK. Now you know that 2445 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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