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%I A050592 #18 Jan 17 2019 10:08:17
%S A050592 3,11,15,19,31,59,75,103,163,235,375,615,767,1223,1411,26655,47351,
%T A050592 75027,83323,121571,238163,312359,359915,471455
%N A050592 Numbers n such that 133*2^n-1 is prime.
%H A050592 Ray Ballinger and Wilfrid Keller, <a href="http://www.prothsearch.com/riesel1.html">List of primes k.2^n + 1 for k < 300</a>
%H A050592 Wilfrid Keller, <a href="http://www.prothsearch.com/riesel2.html">List of primes k.2^n - 1 for k < 300</a>
%H A050592 <a href="/index/Pri#riesel">Index entries for sequences of n such that k*2^n-1 (or k*2^n+1) is prime</a>
%H A050592 Kosmaj, <a href="http://www.15k.org/riesellist.html">Riesel list k<300</a>.
%o A050592 (PARI) is(n)=ispseudoprime(133*2^n-1) \\ _Charles R Greathouse IV_, Jun 13 2017
%K A050592 hard,nonn
%O A050592 1,1
%A A050592 _N. J. A. Sloane_, Dec 29 1999
%E A050592 More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), Jan 02 2008

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