Is 291 a composite or prime number?

Answer 1

As you can easily check, it is divisible by 3.

As you can easily check, it is divisible by 3.

As you can easily check, it is divisible by 3.

As you can easily check, it is divisible by 3.

Answer 2

The digits of 291 add to 12 which is divisible by 3. So 291 is divisible by 3 so it cannot be prime.

Answer 3

97*3 = 291 so 291 is composite, not prime.

Answer 4

As you can easily check, it is divisible by 3.

Answer 5

291 = 3 X 97 and so therefore is a composite number.

Answer 6

composite