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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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5
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1093, 1777, 1933, 4073, 11117, 42533, 42937, 59263, 80473, 90677, 98323, 109717, 111427, 120917, 138893, 157627, 170603, 207367, 227627, 241333, 250753, 296687, 305423, 332303, 346277, 359563, 360907, 367163, 371617, 376307, 404837, 446417
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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EXAMPLE
| 54*1093-1=59021, 54*1093+1=59023; 60*1093-1=65579, 60*1093+1=65581;...
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MATHEMATICA
| 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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PROG
| (MAGMA) [p: p in PrimesUpTo(1000)| IsPrime(54*p-1) and IsPrime(54*p+1) and IsPrime(60*p-1) and IsPrime(60*p+1)] [From V. Librandi, Nov 24 2010]
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CROSSREFS
| Sequence in context: A091673 A174422 A096082 * A023698 A038469 A077816
Adjacent sequences: A138695 A138696 A138697 * A138699 A138700 A138701
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KEYWORD
| nonn
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AUTHOR
| Vladimir Orlovsky (4vladimir(AT)gmail.com), May 15 2008
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EXTENSIONS
| More terms from Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Apr 01 2010
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