A note on the exponential Diophantine equation
Jianping Wang, Tingting Wang, Wenpeng Zhang (2015)
Colloquium Mathematicae
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Let m be a positive integer. Using an upper bound for the solutions of generalized Ramanujan-Nagell equations given by Y. Bugeaud and T. N. Shorey, we prove that if 3 ∤ m, then the equation has only the positive integer solution (x,y,z) = (1,1,2).