A290007 Prime numbers of the form 5^k - 6.

19, 619, 3119, 15619, 9765619, 11102230246251565404236316680908203119, 132348898008484427979425390731194056570529937744140619, 2067951531382569187178521730174907133914530277252197265619, 32311742677852643549664402033982923967414535582065582275390619

Offset: 1

Author

Robert Price, Sep 03 2017

Keywords

• nonn

Links

• Robert Price, Table of n, a(n) for n = 1..11
• 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

Crossrefs

Cf. A165701.

Programs

Mathematica

Select[Table[5^k - 6, {k, 2, 100}], PrimeQ[#] &]