|

楼主 |
发表于 2023-4-18 10:19
|
显示全部楼层
本帖最后由 cuikun-186 于 2023-4-18 19:32 编辑
π(10^5)=9592, r2(10^5)=1620≥[9592*9592/10^5=920
π(10^6)=78948, r2(10^6)=10804≥[78948*78948/10^6=6232
π(10^7)=664579, r2(10^7)=77614≥[664579*664579/10^7]=44166
π(10^8)=5761455, r2(10^8)=582800≥[5761455*5761455/10^8]=331943
π(10^9)=50847534, r2(10^9)=4548410≥[50847534*50847534/10^9]=2585471
π(10^10)=455052511, r2(10^10)=36400976≥[455052511*455052511/10^10]=20707278
π(10^11)=4118054813, r2(10^11)=298182320≥[4118054813*4118054813/10^11]=169583754
π(10^12)=37607912018, r2(10^12)=2487444740≥[37607912018*37607912018/10^12]=141435504
π(10^13)=346065536839, r2(10^13)=21066301710≥[346065536839*346065536839/10^13]=1197613557
π(10^14)=3204941750802,
r2(10^14)=180701260776≥[3204941750802*3204941750802/10^14]=10271651626
π(10^15)=29844570422669,
r2(10^15)=1567076683704≥[29844570422669*29844570422669/10^15]=890698383710 |
|