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Strong pseudoprimes to base 57.
1

%I #11 Aug 06 2015 08:53:42

%S 25,65,125,325,1625,2047,2911,3193,4187,7501,7613,12025,12403,13073,

%T 14425,16531,21349,22177,23149,24727,29459,31621,34669,35425,38503,

%U 40501,45193,48133,49141,57137,63139,64819,65281,68251,83261,85285,96617

%N Strong pseudoprimes to base 57.

%H R. J. Mathar, <a href="/A020283/b020283.txt">Table of n, a(n) for n = 1..300</a>

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

%K nonn

%O 1,1

%A _David W. Wilson_