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
Tue Aug 11 01:35:14 CEST 2009 [seqfan] Re: Dead b-files for A127816 and others