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A187399
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A puzzle called "The hidden prime".
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1
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OFFSET
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1,1
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COMMENTS
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Carlos Rivera asks for a 6-digit number (prime?) that follows from the first six numbers. No solution has been posted after several years. - T. D. Noe, Mar 09 2011
The sequence is a cycle of emirps with the middle two digits of each term the same as the second and next-to-last digits of the subsequent term. The first six terms are as given, the seventh term is the unique six-digit extension. - J. D. Lavelle, Jul 01 2018
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LINKS
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Carlos Rivera, Puzzle 238, The Prime Puzzles & Problems Connection.
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CROSSREFS
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KEYWORD
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nonn,fini,full
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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