本帖最后由 cuikun-186 于 2021-10-13 18:01 编辑
根据r2(N)≥[N/(lnN)^2],则:
r2(10^100)≥[10^100/(ln10^100)^2]=188,611,697,011,613,900,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000
即:
r2(10^100)≥188,611,697,011,613,900,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 |