$ \frac 12+ \frac 13+ \frac 15+ \cdots + \frac 1P$ where $P$ is a prime number less than $N$
I have been getting some number approximately $\log\log N$, but I have no nice way of proving it.
2026-03-30 13:04:02.1774875842
What does the sum of reciprocal of primes less than n equal?
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