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A062219
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Numbers k such that the smoothly undulating palindromic number (37*10^k - 73)/99 is a prime.
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0
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OFFSET
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1,1
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COMMENTS
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Prime versus probable prime status and proofs are given in the author's table.
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LINKS
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EXAMPLE
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k=21 -> (37*10^21 - 73)/99 = 373737373737373737373.
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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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Patrick De Geest and Hans Rosenthal (Hans.Rosenthal(AT)t-online.de), Jun 15 2001
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EXTENSIONS
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STATUS
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approved
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