To determine if 1238 is a prime number or a composite number, we simply look at the factors for 1238.
If the factors of 1238 are only 1238 and 1, then we know that 1238 is a prime number. Otherwise, 1238 is a composite number.
To explain better, if 1238 is only divisible by 1 and 1238, then it is a prime number, and if 1238 is divisible by more than 1238 and 1, then it is a composite number.
The factors of 1238 are as follows:
1, 2, 619, 1238
Therefore, since 1238 is divisible by more than one and itself, the answer to the
question "Is 1238 prime or composite?" is highlighted in blue below.
composite
Is 1239 prime or composite?
OK. Now you know that 1238 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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