Suppose we define $f(x)$ to be the number of prime of the form $4n+3$ that is smaller or equal to $x$, what are some of the simple estimation of this function?
2026-04-22 02:12:30.1776823950
An estimation of the number of prime in the form $4n+3$?
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$$ \frac{x}{2 \log x}, $$ logarithm base $$ e \approx 2.71828$$