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Search: id:A131306
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A131306 Smallest prime ending with exactly n identical digits. +0
1
2, 11, 1777, 23333, 199999, 2999999, 19999999, 577777777, 1777777777, 23333333333, 311111111111, 2111111111111, 17777777777777, 499999999999999, 1333333333333333, 23333333333333333 (list; graph; listen)
OFFSET

1,1

COMMENT

By Dirichlet's theorem, there is a prime each each n. For the n in A004023, the smallest prime consists of all ones. - T. D. Noe, Oct 01 2007

LINKS

T. D. Noe, Table of n, a(n) for n=1..200

EXAMPLE

a(4)=23333 because 23333 is the smallest prime ending with exactly 4 identical digits.

CROSSREFS

Sequence in context: A095820 A100762 A101295 this_sequence A072665 A087344 A027736

Adjacent sequences: A131303 A131304 A131305 this_sequence A131307 A131308 A131309

KEYWORD

base,nonn

AUTHOR

Shyam Sunder Gupta (guptass(AT)rediffmail.com), Sep 29 2007

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Last modified August 29 17:54 EDT 2008. Contains 143238 sequences.


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