Question

the number 2k-1(2k-1)is a perfect number ,if2k-1is​

Answer 1

Answer:

If 2k -1 (k>1) is prime, then n =2k-1 (2k-1) is a perfect number. Proof: We will show that n = sum of its proper factors. We will find all the proper factors of 2k-1(2k-1), and add them. Since 2k-1 is prime, let p = 2k-1.

Answer 2

Answer:

should be a prime number