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A290008
Prime numbers of the form 6^k - 5.
1
31, 211, 1291, 36845653286788892983291, 1326443518324400147398651, 286511799958070431838109691, 174588755932389037098918153698611839369211, 380041719977839666236973721680871319659378770968571
OFFSET
1,1
LINKS
F. Firoozbakht, M. F. Hasler, Variations on Euclid's formula for Perfect Numbers, JIS 13 (2010) #10.3.1.
Henri & Renaud Lifchitz, PRP Records
OpenPFGW Project, Primality Tester
MATHEMATICA
Select[Table[6^k - 5], {k, 1, 100}], PrimeQ[#] &]
CROSSREFS
Cf. A059614.
Sequence in context: A361700 A090027 A164784 * A121616 A284899 A062393
KEYWORD
nonn
AUTHOR
Robert Price, Sep 03 2017
STATUS
approved