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A163680
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Smaller prime p in Ormiston pairs (p, q) with q - p = 54.
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2
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35617, 40639, 359783, 502339, 552917, 580417, 668417, 719839, 807017, 824339, 833117, 861239, 909917, 961339, 987739, 1078417, 1145539, 1168639, 1185017, 1196539, 1220839, 1313239, 1479617, 1497439, 1710439, 1710539, 1732139
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OFFSET
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1,1
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COMMENTS
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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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EXAMPLE
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(359783, 359837) is an Ormiston pair with gap 54, so 359783 is in the sequence.
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MATHEMATICA
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op54Q[{a_, b_}]:=Sort[IntegerDigits[a]]==Sort[IntegerDigits[b]] && b-a==54; Transpose[Select[Partition[Prime[Range[150000]], 2, 1], op54Q]][[1]] (* Harvey P. Dale, Jun 16 2014 *)
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PROG
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(Magma) [ p: p in PrimesUpTo(1750000) | q-p eq 54 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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KEYWORD
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nonn,base
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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