further refined solution

来源: 于 2011-04-05 07:01:24 [旧帖] [给我悄悄话] 本文已被阅读：次

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!