What is the easiest way to do this?

[dull fog]

a common method to solving number theory olympiad problems like these is to first find some upper bound, then check all the bases below that bound

[long sluice]

This is what i did not sure if there is an even easier way:

[dull fog]

yep that looks good

I don't think there is an easier way

[long sluice]

alr thx

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