To determine if 1236 is a prime number or a composite number, we simply look at the factors for 1236.
If the factors of 1236 are only 1236 and 1, then we know that 1236 is a prime number. Otherwise, 1236 is a composite number.
To explain better, if 1236 is only divisible by 1 and 1236, then it is a prime number, and if 1236 is divisible by more than 1236 and 1, then it is a composite number.
The factors of 1236 are as follows:
1, 2, 3, 4, 6, 12, 103, 206, 309, 412, 618, 1236
Therefore, since 1236 is divisible by more than one and itself, the answer to the
question "Is 1236 prime or composite?" is highlighted in blue below.
composite
Is 1237 prime or composite?
OK. Now you know that 1236 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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