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A079907
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Numbers n such that 11*12^n -1 is prime.
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15
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1, 2, 21, 25, 33, 54, 78, 235, 1566, 2273, 2310, 4121, 7775, 42249, 105974, 138961
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OFFSET
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1,2
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COMMENTS
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REFERENCES
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R. K. Guy, Unsolved Problems in Theory of Numbers, Section A3.
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LINKS
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MATHEMATICA
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Do[ If[ PrimeQ[11*12^n - 1], Print[n]], {n, 1, 2000}]
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PROG
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(PARI) for(n=1, 2000, if(isprime(11*12^n-1), print1(n, ", ")))
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CROSSREFS
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KEYWORD
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nonn,hard
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AUTHOR
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EXTENSIONS
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More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), Jan 05 2008
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STATUS
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approved
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