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A036945
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Smallest n-digit prime containing only digits 4 and 9, or 0 if no such prime exists.
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0
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0, 0, 449, 4999, 44449, 444449, 4444949, 44444999, 444499949, 4444444999, 44444449949, 444444494449, 4444449444949, 44444444449499, 444444444499499, 4444444444444999, 44444444444444999, 444444444449449949
(list; graph; refs; listen; history; internal format)
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