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A006988 (10^n)-th prime.
(Formerly M2151)
28
2, 29, 541, 7919, 104729, 1299709, 15485863, 179424673, 2038074743, 22801763489, 252097800623, 2760727302517, 29996224275833, 323780508946331, 3475385758524527, 37124508045065437, 394906913903735329, 4185296581467695669, 44211790234832169331 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

Check the b-file for more terms which might not be listed above.

REFERENCES

R. L. Graham, D. E. Knuth and O. Patashnik, Concrete Mathematics. Addison-Wesley, Reading, MA, 1990, p. 111.

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

LINKS

Marc Deleglise et al., Table of n, a(n) for n = 0..22

C. K. Caldwell, Marc Deleglise's work on new values of pi(x)

UTM, The Nth Prime Page.

Eric Weisstein's World of Mathematics, Prime Numbers

EXAMPLE

a(0) = 10^0-th prime = first prime = 2.

MAPLE

A006988:=n->ithprime(10^n): seq(A006988(n), n=0..7); # Wesley Ivan Hurt, Nov 21 2014

MATHEMATICA

Table[Prime[10^n, {n, 0, 17}]

PROG

(PARI) a(n)=prime(10^n) \\ Charles R Greathouse IV, Jul 21 2011

CROSSREFS

Cf. A006880, A033844, A119780.

Sequence in context: A104535 A187362 A176938 * A245252 A090251 A087281

Adjacent sequences:  A006985 A006986 A006987 * A006989 A006990 A006991

KEYWORD

nonn,nice,changed

AUTHOR

N. J. A. Sloane, Robert G. Wilson v

EXTENSIONS

More terms from Paul Zimmermann

a(19) from Marc Deleglise, Jun 29 2008

a(20) found by Andrey V. Kulsha using a program by Xavier Gourdon, Oct 05 2011

a(21) from Henri Lifchitz, Sep 09 2014

a(22) from Henri Lifchitz, Nov 21 2014

STATUS

approved

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Last modified November 21 13:58 EST 2014. Contains 249779 sequences.