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A144233
Prime numbers of the form 5^k +- 4 for k >= 1.
7
29, 3121, 15629, 78121, 9765629, 30517578121, 710542735760100185871124267578121, 413590306276513837435704346034981426782906055450439453121, 197215226305252951352932141320696557418301608777255751192569732666015629
OFFSET
1,1
MATHEMATICA
Select[Flatten[Table[5^n+{-4, 4}, {n, 90}]], PrimeQ] (* Harvey P. Dale, Jan 26 2019 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Reikku Kulon, Sep 15 2008
EXTENSIONS
More terms from Alois P. Heinz, Jul 14 2019
STATUS
approved