Revision history of "1999 OIM Problems/Problem 4"

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  • (cur | prev) 15:06, 13 December 2023Tomasdiaz (talk | contribs). . (349 bytes) (+349). . (Created page with "== Problem == Let <math>B</math> be an integer greater than 10 such that each of its digits belongs to the set {1, 3, 7, 9}. Show that <math>B</math> has a prime factor greate...")