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Some Factorials Sum Power (Posted on 2008-12-21) Difficulty: 3 of 5
Determine all possible pair(s) (P, Q) of positive integers that satisfy this equation.

                                        P! + Q! = PQ

where P and Q are not necessarily distinct.

See The Solution Submitted by K Sengupta    
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  Subject Author Date
re(2): solution with proof - Kudos!Daniel2008-12-22 15:37:58
re: solution with proof - Kudos!JayDeeKay2008-12-22 12:01:11
solution with proofDaniel2008-12-22 00:41:08
Some Thoughtscomputer explorationCharlie2008-12-21 15:18:29
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