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A196940
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Primes of the form 15*2^n - 1.
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2
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29, 59, 239, 479, 15359, 245759, 1966079, 32212254719, 32985348833279, 141670994486089356410879, 18133887294219437620592639, 72535549176877750482370559, 1246151246048358630847319119012823039, 638029437976759618993827388934565396479
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OFFSET
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1,1
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COMMENTS
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LINKS
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MATHEMATICA
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PROG
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(Magma) [a: n in [1..130] | IsPrime(a) where a is 15*2^n-1]; // Vincenzo Librandi, Feb 23 2014
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CROSSREFS
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Cf. A002237 (n such that 15*2^n-1 is prime).
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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