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Exponential Equation in Five Variables

Number Theory · proposed by @vipproaccout 1750
Find the sum of $x+y+z+t+u$, taken over all quintuples of positive integers $(x,y,z,t,u)$ satisfying the equation $$2^x \cdot 7^y = 1 + 3^z \cdot 5^t \cdot 13^u$$