I have proved that there is only 698896 in 6-digit number.

來源: jinjing 於 2010-10-12 20:56:19 [] [舊帖] [給我悄悄話] 閱讀數 : (112 bytes)
本帖於 2010-10-22 17:24:19 時間, 由超管 論壇管理 編輯

there is no 4-digit number.

If we want to find next number,it at least is 8-digit number.n=121*m^2...m>300...

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