Which of the following expressions can be used to determine a Mersenne prime? Enter the number of the correct option.

Question

Option #1: 2n+1


Option #2: 2n−1


Option #3: 2n−1


(1 point)

Answer 1

The correct option for determining a Mersenne prime is:

Option #2: 2^n - 1

Mersenne primes are of the form \( 2^n - 1 \), where \( n \) is a prime number. Therefore, the answer is 2.