**Least inverse of A015910: smallest integer k > 0 such that 2^k mod k = n, or 0 if no such k exists.**

*1, 0, 3, 4700063497, 6, 19147, 10669, 25, 9, 2228071, 18, 262279, 3763, 95, 1010*

*1 seqfan posts*

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

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