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 A339080 Smaller members of binary Ormiston prime pairs: two consecutive primes whose binary representations are anagrams of each other. 2
 11, 23, 37, 59, 83, 103, 107, 131, 139, 151, 167, 173, 179, 199, 227, 229, 263, 277, 347, 409, 419, 439, 487, 491, 503, 557, 563, 613, 647, 653, 659, 683, 719, 727, 757, 811, 823, 827, 839, 853, 911, 941, 947, 953, 967, 997, 1019, 1063, 1091, 1093, 1123, 1163 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Equivalently, the smaller of two consecutive primes with the same length of binary representation (A070939) and the same binary weight (A000120). LINKS Amiram Eldar, Table of n, a(n) for n = 1..10000 Jens Kruse Andersen, Ormiston Tuples. Andy Edwards, Ormiston Pairs, Australian Mathematics Teacher, Vol. 58, No. 2 (2002), pp. 12-13. Giovanni Resta, Ormiston pairs. Eric Weisstein's World of Mathematics, Rearrangement Prime Pair. EXAMPLE 11 is a term since 11 and 13 are consecutive primes whose binary representations, 1011 and 1101, are anagrams of each other. MATHEMATICA Transpose[Select[Partition[Prime[Range[200]], 2, 1], Sort[IntegerDigits[First[#], 2]] == Sort[IntegerDigits[Last[#], 2]]&]][[1]] (* after Harvey P. Dale at A069567 *) CROSSREFS Cf. A000120, A069567 (decimal analog), A070939, A072274. Sequence in context: A139493 A275591 A250665 * A077345 A130282 A019356 Adjacent sequences: A339077 A339078 A339079 * A339081 A339082 A339083 KEYWORD nonn,base AUTHOR Amiram Eldar, Nov 22 2020 STATUS approved

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Last modified December 3 02:05 EST 2023. Contains 367530 sequences. (Running on oeis4.)