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发表于 2019-7-23 22:19
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本帖最后由 愚工688 于 2019-7-23 14:50 编辑
今天是2019-07-23,以今天日期的1000倍为随机偶数计算一下连续偶数的素对下界值与区域素对下界值:
G(20190723000) = 83422814
inf( 20190723000 )≈ 83379401.6 , Δ≈-0.0005204 ,infS(m) = 25863510.73 , k(m)= 3.22382
G(20190723002) = 25951109;
inf( 20190723002 )≈ 25936325.4 , Δ≈-0.0005697 ,infS(m) = 25863510.73 , k(m)= 1.00282
G(20190723004) = 25880412;
inf( 20190723004 )≈ 25863510.7 , Δ≈-0.0006531,infS(m) = 25863510.73 , k(m)= 1
G(20190723006) = 54225735;
inf( 20190723006 )≈ 54190213 , Δ≈-0.0006551 ,infS(m) = 25863510.73 , k(m)= 2.09524
G(20190723008) = 27416101;
inf( 20190723008 )≈ 27399242.6 , Δ≈-0.0006149 ,infS(m) = 25863510.74 , k(m)= 1.05938
G(20190723010) = 34521764;
inf( 20190723010 )≈ 34497373.2 , Δ≈-0.0007065 ,infS(m) = 25863510.74 , k(m)= 1.33382
G(20190723012) = 53674461;
inf( 20190723012 )≈ 53642837.1 , Δ≈-0.0005892 ,infS(m) = 25863510.74 , k(m)= 2.07407
G(20190723014) = 36041345;
inf( 20190723014 )≈ 36019059.1 , Δ≈-0.0006183 ,infS(m) = 25863510.74 , k(m)= 1.39266
G(20190723016) = 25919011;
inf( 20190723016 )≈ 25906833.2 , Δ≈-0.0004698 ,infS(m) = 25863510.75 , k(m)= 1.00168
G(20190723018) = 51764411;
inf( 20190723018 )≈ 51727021.5 , Δ≈-0.0007223 ,infS(m) = 25863510.75 , k(m)= 2
G(20190723020) = 37641796;
inf( 20190723020 )≈ 37619652 , Δ≈-0.0005883 ,infS(m) = 25863510.75 , k(m)= 1.45455
G(20190723022) = 26127912;
inf( 20190723022 )≈ 26109829.9 , Δ≈-0.0006921 ,infS(m) = 25863510.75 , k(m)= 1.00952
time start =22:02:36 ,time end =22:07:01 ,
除了使用素数连乘式 inf( m )=Sp( m )/(1+μ) 能够得到高精度的素对下界计算值外,使用对数计算式也能够得到计算精度不错的计算值。
使用类似哈李计算式 Xi(M)=t2*c1*M/(logM)^2 对今天日期1000倍的连续偶数的素对数量的计算:
S( 20190723000 ) = 83422814 ;Xi(M)≈ 83269273.97 δxi(M)≈-0.001841 ( t2= 1.091059 )
S( 20190723002 ) = 25951109 ;Xi(M)≈ 25902068.17 δxi(M)≈-0.001890 ( t2= 1.091059 )
S( 20190723004 ) = 25880412 ;Xi(M)≈ 25829349.84 δxi(M)≈-0.001973 ( t2= 1.091059 )
S( 20190723006 ) = 54225735 ;Xi(M)≈ 54118637.31 δxi(M)≈-0.001975 ( t2= 1.091059 )
S( 20190723008 ) = 27416101 ;Xi(M)≈ 27363053.33 δxi(M)≈-0.001935 ( t2= 1.091059 )
S( 20190723010 ) = 34521764 ;Xi(M)≈ 34451808.66 δxi(M)≈-0.002026 ( t2= 1.091059 )
以下偶数的相对误差不计算了,应该也是差不多的。
S( 20190723012 ) = ;Xi(M)≈ 53571983.48 δxi(M)≈ ( t2= 1.091059 )
S( 20190723014 ) = ;Xi(M)≈ 35971484.8 δxi(M)≈ ( t2= 1.091059 )
S( 20190723016 ) = ;Xi(M)≈ 25872614.25 δxi(M)≈ ( t2= 1.091059 )
S( 20190723018 ) = ;Xi(M)≈ 51658699.71 δxi(M)≈ ( t2= 1.091059 )
S( 20190723020 ) = ;Xi(M)≈ 37569963.64 δxi(M)≈ ( t2= 1.091059 )
S( 20190723022 ) = ;Xi(M)≈ 26075342.69 δxi(M)≈ ( t2= 1.091059 )
time start =22:38:23, time end =22:41:13
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