further refined solution

來源: 於 2011-04-05 07:01:24 [舊帖] [給我悄悄話] 本文已被閱讀：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!