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A069463
Greatest prime factor of prime(n)^n+1.
3
3, 5, 7, 1201, 13421, 28393, 22796593, 563377, 1117, 470925821, 1048563011, 3512477579761, 644522798011, 22021301, 24317675453761, 14189041365214758401, 21199857783625129028395239857, 13842121, 292354984050175817, 613624820402521
OFFSET
1,1
LINKS
Hugo Pfoertner and Amiram Eldar, Table of n, a(n) for n = 1..82 (terms 1..50 from Hugo Pfoertner)
FORMULA
a(n) = A006530(A062006(n)).
EXAMPLE
A000040(10)^10+1 = 29^10+1 = 420707233300202 = 2*421*1061*470925821, therefore a(10) = 470925821.
MATHEMATICA
Table[FactorInteger[Prime[n]^n+1][[-1, 1]], {n, 20}] (* Harvey P. Dale, Aug 23 2019 *)
CROSSREFS
Cf. A069460.
Sequence in context: A046472 A065824 A191546 * A288212 A273010 A073691
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Mar 24 2002
EXTENSIONS
More terms from Hugo Pfoertner, May 21 2004
STATUS
approved