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Search: id:A161615
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| A161615 |
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Primes p such that 2*p+3234846615 is also a prime number. |
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+0
1
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| 31, 43, 71, 73, 89, 107, 139, 179, 211, 223, 241, 269, 271, 281, 293, 311, 317, 337, 379, 383, 389, 419, 443, 449, 467, 503, 563, 569, 587, 607, 647, 653, 727, 739, 743, 757, 761, 811, 839, 857, 863, 881, 941, 967, 977, 991, 1019, 1021, 1049, 1061, 1069, 1087
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OFFSET
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1,1
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COMMENT
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The large constant is constructed as 3*5*7*11*13*17*19*23*29 = 3234846615.
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EXAMPLE
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The prime 31 is in the sequence because 2*31 + 3234846615 = 3234846677 is also prime.
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MATHEMATICA
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a=3*5*7*11*13*17*19*23*29; c=0; lst={}; Do[p=Prime[n]; If[PrimeQ[2*p+a], AppendTo[lst, p], c++ ], {n, 6!}]; lst
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CROSSREFS
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Sequence in context: A060834 A060844 A112789 this_sequence A016108 A059898 A014752
Adjacent sequences: A161612 A161613 A161614 this_sequence A161616 A161617 A161618
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KEYWORD
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nonn,less
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AUTHOR
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Vladimir Orlovsky (4vladimir(AT)gmail.com), Jun 14 2009
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EXTENSIONS
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Definition reworded by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Oct 02 2009
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