prime p and perfect square
Source: Turkey NMO 2008 Problem 2
December 2, 2008
quadraticsnumber theory
Problem Statement
a \minus{} ) Find all prime such that \dfrac{7^{p \minus{} 1} \minus{} 1}{p} is a perfect square
b \minus{} ) Find all prime such that \dfrac{11^{p \minus{} 1} \minus{} 1}{p} is a perfect square