further refined solution

来源: calligraphy 2011-04-05 07:01:24 [] [旧帖] [给我悄悄话] 本文已被阅读: 0 次 (143 bytes)
回答: refined solutioncalligraphy2011-04-05 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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