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%I A080127 #12 Oct 28 2021 12:59:31
%S A080127 24739954287740860,48645161281738535,72254704797687083,
%T A080127 95676260903887607,118959989688273472,142135049412622144,
%U A080127 165220513980969424,188229829247429504,211172979243258278
%N A080127 Number of primes less than n*10^18.
%H A080127 Robert G. Wilson v, <a href="/A080127/b080127.txt">Table of n, a(n) for n = 1..100</a>
%H A080127 Thomas R. Nicely, <a href="https://faculty.lynchburg.edu/~nicely/index.html">Some Results of Computational Research in Prime Numbers</a> [See local copy in A007053]
%o A080127 (PARI) a(n)=primepi(10^18*n) \\ _Charles R Greathouse IV_, Apr 29 2015
%Y A080127 Cf. A038801, A028505, A038812, A038813, A038814, A038815, A038816, A038817, A038818, A038819, A038820, A038821, A080122, A080123, A080124, A080125, A080126, A080128, A080129.
%K A080127 nonn
%O A080127 1,1
%A A080127 _Robert G. Wilson v_ and _Jeff Burch_, Jan 29 2003

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