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Edstrayer: ½ð±Ò+5 2016-01-08 01:47:43
ÒýÓûØÌû:
3Â¥: Originally posted by Edstrayer at 2014-05-07 09:19:03
µ±2k+1ΪºÏÊýʱ£¬(k!)^2\equiv 0(mod2k+1)...

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https://en.wikipedia.org/wiki/Wilson%27s_theorem

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We_must_know. We_will_know.
5Â¥2015-08-17 03:20:11
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hank612

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Сľ³æ: ½ð±Ò+0.5, ¸ø¸öºì°ü£¬Ð»Ð»»ØÌû
ÎÒÀ´»»¸ö»°Ìâ

Éè k ÊǷǸºÕûÊý. ¿ÉÒÔÖ¤Ã÷(²»ÄÑ¿´³ö), (k!)^2 mod(2k+1) Ö»ÓÐÈýÖÖ¿ÉÄÜ, 0, 1 »òÕß -1.

ÎÊ: µ±kȡʲôֵʱ, ģΪ0 ?
µ±kȡʲôֵʱ, ģΪ1 ?
We_must_know. We_will_know.
2Â¥2014-05-07 04:34:32
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Edstrayer

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ÒýÓûØÌû:
2Â¥: Originally posted by hank612 at 2014-05-07 04:34:32
ÎÒÀ´»»¸ö»°Ìâ

Éè k ÊǷǸºÕûÊý. ¿ÉÒÔÖ¤Ã÷(²»ÄÑ¿´³ö), (k!)^2 mod(2k+1) Ö»ÓÐÈýÖÖ¿ÉÄÜ, 0, 1 »òÕß -1.

ÎÊ: µ±kȡʲôֵʱ, ģΪ0 ?
µ±kȡʲôֵʱ, ģΪ1 ?

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