further refined solution

來源: calligraphy 於 2011-04-05 07:01:24 [] [舊帖] [給我悄悄話] 閱讀數 : (143 bytes)
回答: refined solution 由 calligraphy 於 2011-04-05 06:40:38

further refinement:

1. Assume n=p^5. 1+p^5=5(p+p^2+p^3+p^4)=5p(1+p+p^2+p^3). That means p

| 1+p^5. This is not possible!

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