Expression: 2p−1 Divisor: p Calculations: We need to find the remainder when 2p−1 is divided by p . Since p is a prime number greater than 5 : Direct putting value p=7. Substitute p=7 into the expression: Expression =27−1 27=128 Expression = 128−1 ⇒ Expression = 127 Now, we need to divide 127 by p=7 and find the remainder. 127÷7 127=7×18+1 The remainder when 27−1 is divided by 7 is 1.
