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A057183
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Numbers n such that (17^n + 1)/18 is a prime.
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16
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7, 17, 23, 47, 967, 6653, 8297, 41221, 113621, 233689, 348259
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OFFSET
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1,1
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LINKS
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J. Brillhart et al., Factorizations of b^n +- 1, Contemporary Mathematics, Vol. 22, Amer. Math. Soc., Providence, RI, 3rd edition, 2002.
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PROG
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(Prime95) PRP=1, 17, 348259, 1, 0, 0, "18"
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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a(8)=41221 corresponds to a probable prime discovered by Paul Bourdelais, Mar 18 2010
a(9)=113621 corresponds to a probable prime discovered by Paul Bourdelais, Sep 21 2011
a(10)=233689 corresponds to a probable prime discovered by Paul Bourdelais, Sep 03 2013
a(11)=348259 corresponds to a probable prime discovered by Paul Bourdelais, May 22 2014
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STATUS
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approved
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