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A214428
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Carmichael numbers n such that A002322(n) = 2^k * p, where k is an integer and p is a prime.
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1
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OFFSET
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1,1
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COMMENTS
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Wright (2012) proves that given the 5 known Fermat primes (A019434), these are the only numbers possible.
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LINKS
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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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STATUS
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approved
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