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A057182
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Numbers n such that (16^n + 1)/17 is a prime.
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22
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3, 5, 7, 23, 37, 89, 149, 173, 251, 307, 317, 30197, 1025393
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OFFSET
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1,1
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LINKS
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J. Brillhart et al., Factorizations of b^n +- 1, Contemporary Mathematics, Vol. 22, Amer. Math. Soc., Providence, RI, 3rd edition, 2002.
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MATHEMATICA
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m = 16; Select[Range[0, 10^3], PrimeQ[(m^# + 1)/(m + 1)] & ] (* Robert Price, Oct 15 2018 *)
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PROG
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(Prime95) PRP=1, 2, 4101572, 1, 0, 0, "17"
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CROSSREFS
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KEYWORD
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hard,more,nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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