Search: id:a030522
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A030522
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Product of first n palindromic primes minus 1.
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+0
2
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1, 5, 29, 209, 2309, 233309, 30563609, 4615105109, 835334024909, 159548798757809, 49938774011194529, 17628387225951669089, 6575388435279972570569, 2518373770712229494528309
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OFFSET
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1,2
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COMMENTS
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The subsequence which are themselves primes begins: 5, 29, 2309, 4615105109, 2518373770712229494528309. - Jonathan Vos Post, Feb 09 2011
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LINKS
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MATHEMATICA
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palQ[n_]:=Module[{idn=IntegerDigits[n]}, idn==Reverse[idn]]; #-1&/@Rest[ FoldList[ Times, 1, Select[Prime[Range[200]], palQ]]] (* Harvey P. Dale, Jun 21 2011 *)
FoldList[Times, Select[Prime[Range[100]], PalindromeQ]]-1 (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Dec 29 2018 *)
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CROSSREFS
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KEYWORD
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nonn,base
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AUTHOR
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EXTENSIONS
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Corrected and extended by Larry Reeves (larryr(AT)acm.org), Sep 25 2000
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STATUS
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approved
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