%I #7 May 13 2013 01:54:11

%S 23,29,37,31,53,7,13,127,157,7,97,5,61,53,149,151,229,137,157,103,43,

%T 41,157,233,151,277,13,131,313,277,11,233,157,359,499,13,79,431,5,101,

%U 397,661,307,479,313,331,13,251,11,601,103,1093,449,409,733,571,499,673,829

%N Smallest prime factor of 2-strong pseudoprimes.

%H Charles R Greathouse IV, <a href="/A180066/b180066.txt">Table of n, a(n) for n = 1..10000</a>

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

%F a(n) = A020639(A001262(n)).

%e The 8th pseudoprime, 42799, is divisible by 127.

%K nonn

%O 1,1

%A Kevin Batista (kevin762401(AT)yahoo.com), Aug 09 2010

%E b-file and edits from _Charles R Greathouse IV_, Aug 28 2010