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A366719
Smallest prime dividing 12^n + 1.
10
2, 13, 5, 7, 89, 13, 5, 13, 17, 7, 5, 13, 89, 13, 5, 7, 153953, 13, 5, 13, 41, 7, 5, 13, 17, 13, 5, 7, 89, 13, 5, 13, 769, 7, 5, 13, 89, 13, 5, 7, 17, 13, 5, 13, 89, 7, 5, 13, 7489, 13, 5, 7, 89, 13, 5, 13, 17, 7, 5, 13, 41, 13, 5, 7, 36097, 13, 5, 13, 89, 7
OFFSET
0,1
LINKS
FORMULA
a(n) = A020639(A178248(n)). - Paul F. Marrero Romero, Oct 25 2023
MATHEMATICA
Table[FactorInteger[12^n + 1][[1, 1]], {n, 0, 69}] (* Paul F. Marrero Romero, Oct 25 2023 *)
KEYWORD
nonn
AUTHOR
Sean A. Irvine, Oct 17 2023
STATUS
approved