A080125 - OEIS

%I #14 Oct 28 2021 12:59:31

%S 279238341033925,547863431950008,812760276789503,1075292778753150,

%T 1336094767763971,1595534099589274,1853851099626620,2111215026220444,

%U 2367751438410550,2623557157654233,2878709063250915,3133269657307298

%N Number of primes less than n*10^16.

%H Robert G. Wilson v, <a href="/A080125/b080125.txt">Table of n, a(n) for n = 1..2000</a>

%H 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]

%H Tomás Oliveira e Silva, <a href="http://sweet.ua.pt/tos/primes.html">Tables of values of pi(x) and of pi2(x)</a>

%o (PARI) a(n)=primepi(10^16*n) \\ _Charles R Greathouse IV_, Apr 29 2015

%Y Cf. A038801, A028505, A038812, A038813, A038814, A038815, A038816, A038817, A038818, A038819, A038820, A038821, A080122, A080123, A080124, A080126, A080127, A080128, A080129.

%K nonn

%O 1,1

%A _Robert G. Wilson v_ and _Jeff Burch_, Jan 29 2003