perplexus.info :: Just Math : Three Power and Product Divisibility

Three Power and Product Divisibility (Posted on 2015-09-19)

Find all pairs (X,Y) of positive integers such that each of 3^X + 1 and 3^Y + 1 is divisible by X*Y.
Prove that there are no others.

No Solution Yet Submitted by K Sengupta

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