A230433 -id:A230433

Search: a230433 -id:a230433

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A291863

Primes of the form 43^k + 4.

+10
0

5, 47, 271818611111, 1718264124282290785247, 5874403106360420018879553647, 802525857116673306810957202573831816754829436253827247, 17343773367030267519903781288812032158308062539012091953077767198995511

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..7.

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[43k+4], {k, 0, 100}], PrimeQ[#] &]

CROSSREFS

Cf. A230433.

KEYWORD

nonn

AUTHOR

Robert Price, Sep 04 2017

STATUS

approved

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