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对数计算式的计算精度:
偶数素数对计算式 Xi(M)=t2*c1*M/(logM)^2
式中:相对误差动态修正系数 t2=1.358-log(M)^(0.5)*.05484; log(M)——自然对数;
C1--类似拉曼扭杨系数C(N),略作改进;(只计算√M内的素数)
G(6000000000) = 22899781 ;Xi(M)≈ 22874190.08 , jd(m)≈ ? 0.99888;
G(6000000002) = 8585981 ;Xi(M)≈ 8578951.81 , jd(m)≈ ? 0.99918;
G(6000000004) = 8588030 ;Xi(M)≈ 8577821.09 , jd(m)≈ ? 0.99881;
G(6000000006) = 26447626 ;Xi(M)≈ 26422026.53 , jd(m)≈ ? 0.99903;
G(6000000008) = 8957244 ;Xi(M)≈ 8950770.04 , jd(m)≈ ? 0.99928;
G(6000000010) = 11446102 ;Xi(M)≈ 11437095.06 , jd(m)≈ ? 0.99921;
G(6000000012) = 17617549 ;Xi(M)≈ 17596450.81 , jd(m)≈ ? 0.99880;
G(6000000014) = 8605694 ;Xi(M)≈ 8597450 , jd(m)≈ ? 0.99904;
G(6000000016) = 8729012 ;Xi(M)≈ 8723208.12 , jd(m)≈ ? 0.99934;
G(6000000018) = 18046111 ;Xi(M)≈ 18031503.59 , jd(m)≈ ? 0.99919;
time start =19:34:59, time end =19:36:03
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