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[数论] 来自数学吧的 一个整除问题

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realnumber Posted 2016-7-17 19:25 |Read mode
$x,y\in N,满足2x^2-1=y^{33},求证:33\mid x$
来自tieba.baidu.com/p/4671543544

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isee Posted 2016-7-17 22:12
x=1,y=1
反例

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战巡 Posted 2016-7-18 01:38
回复 1# realnumber


我觉得可以先试图去证明一下$2x^2-1=y^{33}$只有$x=1,y=1$这一组正整数解

刚才用MMC穷举过,$y$从$1$到$100000$里面只有这一组解

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isee Posted 2016-7-19 00:37
回复  realnumber


我觉得可以先试图去证明一下$2x^2-1=y^{33}$只有$x=1,y=1$这一组正整数解

刚才用MMC ...
战巡 发表于 2016-7-18 01:38
哇,MMC很强大!

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