**Smallest primitive factor of 10^n -1. Also smallest prime p such that 1/p has repeating decimal expansion of period n.**

*3, 11, 37, 101, 41, 7, 239, 73, 333667, 9091, 21649, 9901, 53, 909091, 31, 17*

*1 seqfan posts*

Index of A-numbers in seqfan: by ascending order by month by frequency by keyword

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