The prime-counting function is the function counting the number of prime numbers less than or equal to some real number $x$. It is denoted by $\pi{(x)}$. Using my computer I found that for any positive integer $X\leq 10^{9}$, $$\pi{(X+\ln^2{X})}-\pi{(X-\ln^2{X})}>\ln{X}$$
Question: Does the result hold for all positive integers $X$?
Let $X$ be a positive integer. Then $\pi{(X+\ln^2{X})}-\pi{(X-\ln^2{X})}>\ln{X}$?
Đào Thanh Oai
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