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A289808 Prime numbers of the form 3^k - 28. 1
53, 701, 59021, 14348879, 31381059581, 282429536453, 7625597484959, 50031545098999679, 1144561273430837494885949696399, 26183890704263137277674192438430182020124319, 2120895147045314119491609587512844743630072079 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Robert Price, Table of n, a(n) for n = 1..18

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[3^k - 28], {k, 4, 100}], PrimeQ[#] &]

CROSSREFS

Cf. A219047.

Sequence in context: A219989 A027007 A142780 * A183802 A183794 A201153

Adjacent sequences:  A289805 A289806 A289807 * A289809 A289810 A289811

KEYWORD

nonn

AUTHOR

Robert Price, Sep 02 2017

STATUS

approved

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Last modified May 28 13:05 EDT 2022. Contains 354115 sequences. (Running on oeis4.)