Question

Find all the prime forms of n³-1, where n is a natural number.

Answer 1

In mathematics, a Mersenne prime is a prime number of the form 2

n

−1. This is to say that it is a prime number which is one less than a power of two. The first four Mersenne primes are 3,7,31,127 .

Here, Given that n

3

−1,n=2

So, prime number =2

3

−1=7