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A062639
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Numbers k such that 73^k - 72^k is prime.
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0
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OFFSET
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1,1
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COMMENTS
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Terms greater than 1000 are often only strong pseudoprimes.
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LINKS
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PROG
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CROSSREFS
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KEYWORD
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nonn,hard
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AUTHOR
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EXTENSIONS
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a(4) from Robert Price, Apr 21 2014 (Computer run by Adam Marciniec)
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STATUS
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approved
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