To determine if 830 is a prime number or a composite number, we simply look at the factors for 830.
If the factors of 830 are only 830 and 1, then we know that 830 is a prime number. Otherwise, 830 is a composite number.
To explain better, if 830 is only divisible by 1 and 830, then it is a prime number, and if 830 is divisible by more than 830 and 1, then it is a composite number.
The factors of 830 are as follows:
1, 2, 5, 10, 83, 166, 415, 830
Therefore, since 830 is divisible by more than one and itself, the answer to the
question "Is 830 prime or composite?" is highlighted in blue below.
composite
Is 831 prime or composite?
OK. Now you know that 830 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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