Solve for a
a=169
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371293a=13^{7}
Calculate 13 to the power of 5 and get 371293.
371293a=62748517
Calculate 13 to the power of 7 and get 62748517.
a=\frac{62748517}{371293}
Divide both sides by 371293.
a=169
Divide 62748517 by 371293 to get 169.
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