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A102908
Primes of the form 3^n + 3^4 + 1.
1
109, 163, 811, 2269, 31381059691, 22876792455043, 4052555153018976349, 7395104114874202511988394360121831439224179537192802989, 507528786056415600719754159741696356908742250191663887263627442114963
OFFSET
1,1
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]
FORMULA
a(n) = 3^A168170(n) + 3^4 + 1. [M. F. Hasler, Nov 25 2009]
MATHEMATICA
Select[3^Range[150]+82, PrimeQ] (* Harvey P. Dale, Dec 18 2011 *)
CROSSREFS
Sequence in context: A283792 A333743 A141948 * A141998 A061277 A142945
KEYWORD
nonn
AUTHOR
Roger L. Bagula, Mar 01 2005
EXTENSIONS
Edited by M. F. Hasler, Nov 25 2009
STATUS
approved