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单词 CarmichalNumber56112
释义

Carmichal number 561


561 is the smallest Carmichael numberMathworldPlanetmath in the ring ofintegersMathworldPlanetmath. However it is only a pseudoprime in the ringof Gaussian integersMathworldPlanetmath. We can use pari to findthe bases to which 561 is a pseudoprime. Ifound it is pseudoprime to bases 12 + i, 22 +i,33 + i and 44 + i. Needless to say it is apseudoprime to other bases too. More on this later.

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更新时间:2025/5/4 13:22:38