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发表于 2009-9-15 15:43
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[原创]三个奇素数和的分布
[这个贴子最后由白新岭在 2009/09/15 03:46pm 第 1 次编辑]
用6类代数式进行2元加法合成得到,30n-28,30n-26,30n-24,30n-22,30n-20,30n-18,30n-16,30n-14,30n-12,30n-10,30n-8,30n-6,30n-4,30n-2
30n的数类的合成比例为:3/1/2/1/2/4/2/2/4/2/1/2/1/3/6,(参与合成的类为:30n-29,30n-19,30n-17,30n-13,30n-11,30n-1)
上边的比例说明,能整除30的偶数类占全体孪生素数合成数目的1/6,而30n-26,30n-22,30n-8,30n-4,任何一类数仅占总体合成数目的1/36,
30n-28,30n-2两类各占总体合成数目的1/12;30n-18,30n-12两类各占总体合成数目的1/9;30n-24,30n-20,30n-16,30n-14,30n-10,30n-6每类各
占总体合成数目的1/18.
这是用类别合成法得到的理论值,那么实际情况如何呢?
下面有90090内的孪生素数的实际组合数目:
总共有2813927对,分别为 2,4,6,8,10,12,14,16,18,20,22,24,26,28,30)=(233956,77918,154611,77307,156863,313722,157487,153853,
306454,153837,82301,163382,81691,233515.467030),把总类36划分,每类为78164.638,都除于此参考值,比值如下:
参考值
偶数类→→实际组数→→78164.63889→→理论比例→→总误差率→→平均误差率
2→→233956→→2.993118158→→3→→0.006881842→→0.002293947
4→→77918→→0.996844623→→1→→0.003155377→→0.003155377
6→→154611→→1.978017198→→2→→0.021982802→→0.010991401
8→→77307→→0.989027789→→1→→0.010972211→→0.010972211
10→→156863→→2.00682818→→2→→-0.00682818→→-0.00341409
12→→313722→→4.013605186→→4→→-0.013605186→→-0.003401296
14→→157487→→2.01481133→→2→→-0.01481133→→-0.007405665
16→→153853→→1.968319718→→2→→0.031680282→→0.015840141
18→→306454→→3.920621964→→4→→0.079378036→→0.019844509
20→→153837→→1.968115022→→2→→0.031884978→→0.015942489
22→→82301→→1.052918573→→1→→-0.052918573→→-0.052918573
24→→163382→→2.090229064→→2→→-0.090229064→→-0.045114532
26→→81691→→1.045114532→→1→→-0.045114532→→-0.045114532
28→→233515→→2.987476221→→3→→0.012523779→→0.004174593
30→→467030→→5.974952442→→6→→0.025047558→→0.004174593
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