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Search: id:A138698
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| A138698 |
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Primes p such that 54*p-1, 54*p+1 and 60*p-1, 60*p+1 are twin primes. |
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6
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| 1093, 1777, 1933, 4073, 11117, 42533, 42937, 59263, 80473, 90677, 98323, 109717, 111427, 120917, 138893, 157627, 170603, 207367, 227627
(list; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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54*1093-1=59021, 54*1093+1=59023; 60*1093-1=65579, 60*1093+1=65581;...
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MATHEMATICA
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a=54; b=60; Select[Prime[Range[14^4]], PrimeQ[a*#-1]&&PrimeQ[a*#+1]&&PrimeQ[b*#-1]&&PrimeQ[b*#+1]&]
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CROSSREFS
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Sequence in context: A043873 A091673 A096082 this_sequence A023698 A038469 A077816
Adjacent sequences: A138695 A138696 A138697 this_sequence A138699 A138700 A138701
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KEYWORD
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nonn
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AUTHOR
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Vladimir Orlovsky (4vladimir(AT)gmail.com), May 15 2008
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