To determine if 1200 is a prime number or a composite number, we simply look at the factors for 1200.
If the factors of 1200 are only 1200 and 1, then we know that 1200 is a prime number. Otherwise, 1200 is a composite number.
To explain better, if 1200 is only divisible by 1 and 1200, then it is a prime number, and if 1200 is divisible by more than 1200 and 1, then it is a composite number.
The factors of 1200 are as follows:
1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30, 40, 48, 50, 60, 75, 80, 100, 120, 150, 200, 240, 300, 400, 600, 1200
Therefore, since 1200 is divisible by more than one and itself, the answer to the
question "Is 1200 prime or composite?" is highlighted in blue below.
composite
Is 1201 prime or composite?
OK. Now you know that 1200 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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