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Prime numbers of the form 11^k +- 10.
1

%I #5 Jun 26 2022 04:26:32

%S 131,1321,214358891,505447028499293761,5559917313492231491,

%T 895430243255237372246521,

%U 20796505671840591460586660430317517562942313712635618374571

%N Prime numbers of the form 11^k +- 10.

%C The next terms are

%C 539407797827634189900210968137750826278309533633974732577186113975171

%C and 18621820132595144528407508578788012958402726053563392593510831217730632927190897881.

%C The next larger term is 11^273 - 10 and there are no further terms for k < 1001.

%C It is conjectured that 131 is the only palindrome in the sequence.

%Y Cf. A000040, A000668, A144231, A144232, A144233, A144234, A144236, A144242, A144245, A144246.

%K nonn

%O 1,1

%A _Reikku Kulon_, Sep 15 2008