Ogechi is trying to demonstrate that 7 is a Mersenne prime. Which of the following expressions should she use?(1 point)

Responses

7 is not a Mersenne prime.
7 is not a Mersenne prime.

23−1
2 cubed minus 1

2(3)+1
2 left parenthesis 3 right parenthesis plus 1

2(3)−1
2 left parenthesis 3 right parenthesis minus 1