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A185073
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Numbers n such that (34^n - 1)/33 is prime.
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1
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OFFSET
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1,1
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LINKS
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Table of n, a(n) for n=1..5.
H. Dubner, Generalized repunit primes, Math. Comp., 61 (1993), 927-930.
H. Lifchitz, Mersenne and Fermat primes field
P. Bourdelais,A Generalized Repunit Conjecture
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MATHEMATICA
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Select[Prime[Range[100]], PrimeQ[(34^#-1)/33]&]
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PROG
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(PARI) isok(n) = isprime((34^n-1)/33); \\ Michel Marcus, Mar 13 2016
(PARI) lista(nn) = for(n=1, nn, if(ispseudoprime((34^n - 1)/33), print1(n, ", "))); \\ Altug Alkan, Mar 13 2016
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CROSSREFS
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Cf. A028491, A004061, A004062, A004063, A004064, A004023, A005808, A016054, A006032, A006033, A006034, A006035, A098438, A127995-A128005.
Sequence in context: A242562 A201357 A220551 * A185193 A066457 A203515
Adjacent sequences: A185070 A185071 A185072 * A185074 A185075 A185076
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KEYWORD
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hard,more,nonn
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AUTHOR
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Robert Price, Mar 10 2012
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EXTENSIONS
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a(5)=125101 corresponds to a probable prime discovered by Paul Bourdelais, Nov 20 2017
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STATUS
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approved
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