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A102908
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Primes of the form 3^n+3^4+1.
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1
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109, 163, 811, 2269, 31381059691, 22876792455043, 4052555153018976349, 7395104114874202511988394360121831439224179537192802989, 507528786056415600719754159741696356908742250191663887263627442114963
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| The following terms are too large to be displayed here, but the exponents n can be found in sequence A168170. [M. F. Hasler, Nov 25 2009]
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FORMULA
| a(n) = 3^A168170(n)+3^4+1. [M. F. Hasler, Nov 25 2009]
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MATHEMATICA
| a = Delete[Union[Flatten[Table[If [PrimeQ[3^n + 3^4 + 1] == True, 3^n + 3^4 + 1, 0], {n, 1, 200}]]], 1]
Select[3^Range[150]+82, PrimeQ] (* From Harvey P. Dale, Dec 18 2011 *)
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CROSSREFS
| Sequence in context: A164288 A161483 A141948 * A141998 A061277 A142945
Adjacent sequences: A102905 A102906 A102907 * A102909 A102910 A102911
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KEYWORD
| nonn
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AUTHOR
| Roger L. Bagula (rlbagulatftn(AT)yahoo.com), Mar 01 2005
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EXTENSIONS
| Edited by M. F. Hasler (www.univ-ag.fr/~mhasler), Nov 25 2009
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