再看看几个偶数的素数对下限值

cuikun-186

再看看几个偶数的下限值

cuikun-186

本帖最后由 cuikun-186 于 2023-4-18 10:37 编辑


崔坤的r2(N)≥[(π (N))^2/N]有无反例?

cuikun-186

π (6^4)=210, r2(6^4)=98 ≥[210*210/6^4]=34

π (6^5)=985,r2(6^5)=322 ≥[985*985/6^5]=124

π (6^6)=4821,r2(6^6)=1312 ≥[4821*4821/6^6]=498

π (6^7)=24427,r2(6^7)=5502 ≥[24427*24427/6^7]=2131

π (6^8)=126726,r2(6^8)=25010 ≥[126726*126726/6^8]=9561

π (6^9)=669432,r2(6^9)=116964 ≥[669432*669432/6^9]=44468

π (6^10)=3588148,r2(6^10)=560696 ≥[3588148*3588148/6^10]=212925

π (6^11)=19453038,r2(6^11)=2749126 ≥[19453038*19453038/6^11]=1043064

π (6^12)=106460872,r2(6^12)=13729618 ≥[106460782*106460782/6^12]=5206720