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A061372
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Primes having only 0,4,6,8,9 as digits.
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6
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89, 409, 449, 499, 809, 4049, 4099, 4409, 4649, 4889, 4909, 4969, 4999, 6089, 6449, 6469, 6689, 6869, 6899, 6949, 8009, 8069, 8089, 8609, 8669, 8689, 8699, 8849, 8969, 8999, 9049, 9649, 9689, 9949, 40009, 40099, 40499, 40609, 40699, 40849, 40949
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OFFSET
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1,1
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COMMENTS
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Primes having digits that are all 0 or composite.
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LINKS
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EXAMPLE
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a(5) = 4049 is a prime and 4,0,9 are 0 or composite digits.
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MATHEMATICA
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Select[FromDigits/@Tuples[{0, 4, 6, 8, 9}, 5], PrimeQ] (* Harvey P. Dale, May 04 2011 *)
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CROSSREFS
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KEYWORD
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nonn,base,easy,less
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AUTHOR
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EXTENSIONS
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Definition corrected Dec 05 2006
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STATUS
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approved
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