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A003617
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Smallest n-digit prime.
(Formerly M2008)
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42
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2, 11, 101, 1009, 10007, 100003, 1000003, 10000019, 100000007, 1000000007, 10000000019, 100000000003, 1000000000039, 10000000000037, 100000000000031, 1000000000000037, 10000000000000061, 100000000000000003, 1000000000000000003
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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REFERENCES
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O'Hara, J. Rec. Math., 22 (1990), Table on page 278.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
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T. D. Noe, Table of n, a(n) for n=1..200 [Jon E. Schoenfield has confirmed that these are primes using MAGMA, Jan 31 2009]
Eric Weisstein's World of Mathematics, Next Prime
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MATHEMATICA
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Table[a := 10^n + 1; While[ ! PrimeQ[a], a++ ]; a, {n, 0, 30}] - Stefan Steinerberger, Apr 08 2006
NextPrime/@(10^Range[0, 20]) (* Harvey P. Dale, May 01 2011 *)
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PROG
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(PARI) a(n)=nextprime(10^(n-1)) \\ Charles R Greathouse IV, Jul 15 2011
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CROSSREFS
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Cf. A003618, A033873.
Sequence in context: A115062 A062397 A158578 * A114018 A089770 A199302
Adjacent sequences: A003614 A003615 A003616 * A003618 A003619 A003620
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KEYWORD
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nonn,nice,base
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AUTHOR
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N. J. A. Sloane, Mira Bernstein
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EXTENSIONS
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More terms from Stefan Steinerberger, Apr 08 2006
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STATUS
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approved
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