Volume no :4, Issue no: 2, December (2010)

ON THE DIOPHANTINE EQUATION

Author's: Gervasio G. Bastos and Diego Marques
Pages: [91] - [103]
Received Date: November 27, 2010
Submitted by:

Abstract

In 1981, Beukers used a hypergeometric method for proving that the well-known generalized Ramanujan-Nagell equation



has at most one solution in positive integers x and n, where C and p are previously fixed, with a few exceptions.
In this note, we give an elementary proof of this result when n is even as well as the complete solution of a such equation when C is a power of 2009. Moreover, we prove that the previous result is surprisingly connected with the title equation, which allow us to find all solutions for that equation.

Keywords

Diophantine equation, linear forms in logarithms, Baker-Davenport, Ramanujan-Nagell.