回复:A Number Question

来源: 2005-02-06 15:34:59 [旧帖] [给我悄悄话] 本文已被阅读:
It is impossible.We get 1000000....01*m=n^2. 1000.....01can't divided by p^2 ,because 10000.....01=3t+2. let 1000......01=p1*p2*...*ps,m has to be=p1*p2...ps*...,then 1000.......01*m is not repeat number.