Revision history of "AoPS Wiki:Problem of the Day/August 14, 2011"

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  • (cur | prev) 10:20, 14 August 2011Mrdavid445 (talk | contribs). . (131 bytes) (+131). . (Created page with "Find all natural numbers <math>n</math> for which each natural number written with <math>n-1</math>'ones' and one 'seven' is prime.")