A080128 Number of primes less than n*10^19.

234057667276344607, 460637655126005490, 684559920583084690, 906790515105576571, 1127779923790184543, 1347790196060095447, 1566992840325479804, 1785508810123564582, 2003427950419417330

Offset: 1

Author

Robert G. Wilson v and Jeff Burch, Jan 29 2003

Keywords

• nonn

Links

• Robert G. Wilson v, Table of n, a(n) for n = 1..100
• Thomas R. Nicely, Some Results of Computational Research in Prime Numbers [See local copy in A007053]

Crossrefs

Cf. A038801, A028505, A038812, A038813, A038814, A038815, A038816, A038817, A038818, A038819, A038820, A038821, A080122, A080123, A080124, A080125, A080126, A080127, A080129.

Programs

PARI

a(n)=primepi(10^19*n) \\ Charles R Greathouse IV, Apr 29 2015