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A082102
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Primes of the form 2^(n-1) + 3^n.
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2
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11, 31, 89, 761, 2251, 6689, 59561, 14365291, 10461401779, 282437925089, 150094669656737489, 239299329512092506300739, 2153693964201457673153371, 107752636643058216783050887908587014548761
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OFFSET
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1,1
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LINKS
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EXAMPLE
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89 = 2*2*2 + 3*3*3*3.
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MATHEMATICA
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Do[s=2^(w-1)+3^w; If[PrimeQ[s], Print[s]], {w, 1, 2000}]
Select[Table[2^(n-1)+3^n, {n, 100}], PrimeQ] (* Harvey P. Dale, Feb 09 2016 *)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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