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 A087595 Smallest n-digit member of A087593. Define dd(k) = the number formed by concatenating the absolute difference of successive digits of k. Sequence contains smallest n-digit prime p such that dd(p) is also prime. 3
 13, 101, 1009, 10009, 100363, 1000003, 10000141, 100000543, 1000000007, 10000000589, 100000000447, 1000000000063, 10000000000609, 100000000000721, 1000000000000843, 10000000000002547, 100000000000000609 (list; graph; refs; listen; history; text; internal format)
 OFFSET 2,1 COMMENTS Conjecture: Sequence is infinite. LINKS EXAMPLE a(5) = 10009 and dd(10009) = 1009 is a prime. CROSSREFS Cf. A087593, A087594, A087596. Sequence in context: A142297 A131021 A332907 * A117653 A004635 A289420 Adjacent sequences:  A087592 A087593 A087594 * A087596 A087597 A087598 KEYWORD base,nonn AUTHOR Amarnath Murthy, Sep 18 2003 EXTENSIONS More terms from David Wasserman, Jun 15 2005 STATUS approved

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Last modified July 1 02:58 EDT 2022. Contains 354947 sequences. (Running on oeis4.)