設有一2008位的數為5080508050805080......80
將其除以10,得2007位的數5080508050805080......8,
將二數相加得11x50805080508050805080...8=558855885588...88,將此數在任意位加入5或8即得2009位
設有一2008位的數為5080508050805080......80
將其除以10,得2007位的數5080508050805080......8,
將二數相加得11x50805080508050805080...8=558855885588...88,將此數在任意位加入5或8即得2009位
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