To determine if 770 is a prime number or a composite number, we simply look at the factors for 770.
If the factors of 770 are only 770 and 1, then we know that 770 is a prime number. Otherwise, 770 is a composite number.
To explain better, if 770 is only divisible by 1 and 770, then it is a prime number, and if 770 is divisible by more than 770 and 1, then it is a composite number.
The factors of 770 are as follows:
1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 154, 385, 770
Therefore, since 770 is divisible by more than one and itself, the answer to the
question "Is 770 prime or composite?" is highlighted in blue below.
composite
Is 771 prime or composite?
OK. Now you know that 770 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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