A144233 Prime numbers of the form 5^k +- 4 for k >= 1.

29, 3121, 15629, 78121, 9765629, 30517578121, 710542735760100185871124267578121, 413590306276513837435704346034981426782906055450439453121, 197215226305252951352932141320696557418301608777255751192569732666015629

Offset: 1

Author

Reikku Kulon, Sep 15 2008

Keywords

• nonn

Links

• Amiram Eldar, Table of n, a(n) for n = 1..15

Crossrefs

Cf. A000040, A000668, A144231, A144232.

Programs

Mathematica

Select[Flatten[Table[5^n+{-4,4},{n,90}]],PrimeQ] (* Harvey P. Dale, Jan 26 2019 *)

Extensions

More terms from Alois P. Heinz, Jul 14 2019