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A086709
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Primes p such that p-1 and p+1 are both divisible by fourth powers.
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5
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1249, 2753, 3727, 4049, 4801, 5023, 7937, 10529, 11503, 12799, 13121, 15391, 20897, 21871, 22193, 23167, 25759, 28351, 28751, 31249, 32561, 33857, 35153, 37423, 39041, 42929, 46817, 47791, 48751, 49409, 50383, 51679, 55889, 58481, 62047
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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MATHEMATICA
| f[n_]:=Max[Last/@FactorInteger[n]]; lst={}; Do[p=Prime[n]; If[f[p-1]>=4&&f[p+1]>=4, AppendTo[lst, p]], {n, 8!}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Oct 03 2009]
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CROSSREFS
| Sequence in context: A184500 A047629 A020384 * A120376 A122272 A195810
Adjacent sequences: A086706 A086707 A086708 * A086710 A086711 A086712
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KEYWORD
| nonn
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AUTHOR
| Amarnath Murthy, Jason Earls (zevi_35711(AT)yahoo.com), Jul 28 2003
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