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The right Aurifeuillian factor of p^p + 1 for primes p congruent to 3 (mod 4).
5

%I #53 Jul 23 2022 19:24:25

%S 7,911,407353,870542161121,2498077661567473,63472256064447557254913,

%T 54382651771205224279713471565249817,

%U 767102704711961850109296220485687497279,6066304600323886604542912453739225327712511596287519

%N The right Aurifeuillian factor of p^p + 1 for primes p congruent to 3 (mod 4).

%C For prime factorizations of p^p + 1 see A125136.

%H Patrick A. Thomas, <a href="/A352401/b352401.txt">Table of n, a(n) for n = 1..65</a>

%H Calculators, <a href="http://myfactorcollection.mooo.com:8090/calculators.html">Aurifeuillian LMs</a>

%e 870542161121 is the larger Aurifeuillian factor of 19^19 + 1, and 19 is the 4th term of A002145, so a(4) = 870542161121.

%Y Cf. A002145, A125136, A230379, A352711, A352732, A352400.

%K nonn

%O 1,1

%A _Patrick A. Thomas_, Jun 08 2022