This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A069460 #36 Jul 08 2023 01:19:42
%S A069460 2,31,5,3221,157,25646167,3833,7792003,732541,150332843,144061,
%T A069460 17615988547,6177695707,461017351,31129845205681,
%U A069460 361353204962363828785531,903870199,751410597400064602523400427092397,25058741,153436090543,1750258119644519
%N A069460 Greatest prime factor of prime(n)^n - 1.
%H A069460 Hugo Pfoertner and Amiram Eldar, <a href="/A069460/b069460.txt">Table of n, a(n) for n = 2..96</a> (terms 2..50 from Hugo Pfoertner)
%H A069460 Dario Alpern, <a href="https://www.alpertron.com.ar/ECM.HTM">Factorization using the Elliptic Curve Method.</a>
%H A069460 FactorDB, <a href="http://factordb.com/index.php?query=509%5E97-1">Status of 509^97-1</a>.
%F A069460 a(n) = A006530(A069459(n)).
%e A069460 A000040(9)^9 - 1 = 23^9 - 1 = 1801152661462 = 2*7*11*19*79*7792003, therefore a(9) = 7792003.
%t A069460 Table[FactorInteger[Prime[n]^n-1][[-1,1]],{n,2,30}] (* _Harvey P. Dale_, May 19 2019 *)
%Y A069460 Cf. A006530, A069459, A069463.
%K A069460 nonn
%O A069460 2,1
%A A069460 _Reinhard Zumkeller_, Mar 24 2002
%E A069460 More terms from _Hugo Pfoertner_, May 18 2004
%E A069460 Undefined a(1) removed by _Hugo Pfoertner_, Jul 22 2019