To determine if 430 is a prime number or a composite number, we simply look at the factors for 430.
If the factors of 430 are only 430 and 1, then we know that 430 is a prime number. Otherwise, 430 is a composite number.
To explain better, if 430 is only divisible by 1 and 430, then it is a prime number, and if 430 is divisible by more than 430 and 1, then it is a composite number.
The factors of 430 are as follows:
1, 2, 5, 10, 43, 86, 215, 430
Therefore, since 430 is divisible by more than one and itself, the answer to the
question "Is 430 prime or composite?" is highlighted in blue below.
composite
Is 431 prime or composite?
OK. Now you know that 430 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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