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%I #7 Dec 20 2018 12:45:08
%S 1,13,23,43,59,88,127,148,659
%N Integers for which the smallest m in A040081 such that n*2^m - 1 is prime (A038699) increases.
%C Where records occur in A040081. A103963 gives the record values.
%C The next candidate is 2293.
%H Wilfrid Keller, <a href="http://www.prothsearch.com/rieselprob.html">The Riesel Problem: Definition and Status</a>
%o (PARI) a=0; for(n=1, 148, m=0; while(!ispseudoprime(n*2^m-1), m++); if(m>a, a=m; print1(n, ", ")));
%Y Cf. A038699, A040081, A103963.
%K nonn,more
%O 1,2
%A _Arkadiusz Wesolowski_, Apr 01 2014
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