A290008 Prime numbers of the form 6^k - 5.

31, 211, 1291, 36845653286788892983291, 1326443518324400147398651, 286511799958070431838109691, 174588755932389037098918153698611839369211, 380041719977839666236973721680871319659378770968571

Offset

1,1

Links

Robert Price, Table of n, a(n) for n = 1..10

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 * A377406 A121616 A284899

Adjacent sequences: A290005 A290006 A290007 * A290009 A290010 A290011

Keyword

nonn

Author

Robert Price, Sep 03 2017

Status

approved