Nonprimes n such that 5^n==5 (mod n).
1, 4, 10, 15, 20, 65, 124, 190, 217, 310, 435, 561, 781, 1105, 1541, 1729, 1891, 2465
2 seqfan posts
Wed Sep 1 16:19:27 CEST 2010 [seqfan] Re: zig-zag pseudoprimes
Wed Sep 1 12:54:33 CEST 2010 [seqfan] Re: zig-zag pseudoprimes
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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