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Search: id:A163682
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| A163682 |
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Smaller prime p in Ormiston pairs (p, q) with q - p = 90. |
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2
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| 2030789, 2542237, 3863017, 4508341, 7001123, 7583341, 8482459, 8547677, 8916239, 9194677, 9470017, 11117123, 11755673, 11999563, 13691563, 13898237, 15906127, 16047673, 16272343, 16299013, 16829563, 17437457, 17604347
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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An Ormiston pair (or rearrangement prime pair) is a pair of consecutive primes that use the same digits in a different order.
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LINKS
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Jens Kruse Andersen, Ormiston Tuples
Eric Weisstein's World of Mathematics, Rearrangement Prime Pair
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EXAMPLE
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(3863017, 3863107) is an Ormiston pair with gap 90, so 3863017 is in the sequence.
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PROGRAM
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(MAGMA) [ p: p in PrimesUpTo(17700000) | q-p eq 90 and a eq b where a is Sort(Intseq(p)) where b is Sort(Intseq(q)) where q is NextPrime(p) ];
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CROSSREFS
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Subsequence of A069567.
Cf. A072274, A163863.
Sequence in context: A022226 A032754 A104441 this_sequence A045871 A034639 A113568
Adjacent sequences: A163679 A163680 A163681 this_sequence A163683 A163684 A163685
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KEYWORD
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nonn,base
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AUTHOR
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Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Aug 03 2009
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EXTENSIONS
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Keyword base added by Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Sep 18 2009
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