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A103112
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Smallest natural number m such that n^n^n - m is a prime.
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1
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OFFSET
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2,1
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LINKS
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EXAMPLE
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a(5)=10978 because 5^5^5 - 10978 is a prime and 5^5^5 - k is composite for 0<k<10978.
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PROG
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CROSSREFS
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KEYWORD
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hard,more,nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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