A080128 - OEIS

%I #11 Oct 28 2021 12:59:31

%S 234057667276344607,460637655126005490,684559920583084690,

%T 906790515105576571,1127779923790184543,1347790196060095447,

%U 1566992840325479804,1785508810123564582,2003427950419417330

%N Number of primes less than n*10^19.

%H Robert G. Wilson v, <a href="/A080128/b080128.txt">Table of n, a(n) for n = 1..100</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]

%o (PARI) a(n)=primepi(10^19*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, A080125, A080126, A080127, A080129.

%K nonn

%O 1,1

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