I am using Maxima 5.15.0 under Windows.
find_root((655/656)^n = 0.5, n, 1, 1000) gives 114.8, which is completely wrong.
Fortunately, I checked the answer (always a good habit, I know!).
Either of the following expressions give the correct answer, which is 454.4
find_root(float(655/656)^n = 0.5, n, 1, 1000);
float(log(0.5)/log(655/656));
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