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Strong pseudoprimes to base 61.
1

%I #13 Aug 04 2015 06:51:42

%S 15,217,341,1261,2701,3661,6541,6697,7613,13213,16213,22177,23653,

%T 23959,31417,50117,61777,63139,67721,76301,77421,79381,80041,102341,

%U 113491,115231,145993,160147,163073,164737,170941,178709,197209,210817,249631

%N Strong pseudoprimes to base 61.

%C The smallest number which is a strong pseudoprime to the bases 2 (A001262), 7 (A020233) and also 61 (here) is 4759123141 [Jaeschke]. - R. J. Mathar, Apr 05 2011

%H R. J. Mathar, <a href="/A020287/b020287.txt">Table of n, a(n) for n = 1..202</a>

%H G. Jaeschke, <a href="http://dx.doi.org/10.1090/S0025-5718-1993-1192971-8">On strong pseudoprimes to several bases</a>, Mathematics of Computation, 61 (1993), 915-926.

%H <a href="/index/Ps#pseudoprimes">Index entries for sequences related to pseudoprimes</a>

%K nonn

%O 1,1

%A _David W. Wilson_