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A037067
Smallest prime containing exactly n 7's.
+0
14
7, 277, 1777, 47777, 727777, 7477777, 77767777, 577777777, 1777777777, 67777777777, 377777777777, 7177777777777, 17777777777777, 577777777777777, 2777777777777777, 77777767777777777, 377777777777777777
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Maintained by
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Last modified December 21 10:15 EST 2009. Contains 171081 sequences.
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