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A057179
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Numbers n such that (13^n + 1)/14 is a prime.
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16
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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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MATHEMATICA
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PROG
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(Prime95) PRP=1, 13, 1199467, 1, 0, 0, "14"
(PARI) is(n) = ispseudoprime((13^n + 1)/14); \\ Altug Alkan, Dec 14 2015
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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(9) corresponds to a probable prime discovered by Paul Bourdelais, Mar 18 2010
a(10) corresponds to a probable prime discovered by Paul Bourdelais, Dec 14 2015
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STATUS
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approved
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