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%I A050577 #18 Jan 17 2019 10:08:17
%S A050577 3,7,11,19,63,75,95,127,155,163,171,283,563,1739,2243,3971,4375,5227,
%T A050577 8307,9943,18383,19835,25879,26927,36895,304771,422939
%N A050577 Numbers n such that 103*2^n-1 is prime.
%H A050577 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 A050577 Wilfrid Keller, <a href="http://www.prothsearch.com/riesel2.html">List of primes k.2^n - 1 for k < 300</a>
%H A050577 <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 A050577 Kosmaj, <a href="http://www.15k.org/riesellist.html">Riesel list k<300</a>.
%o A050577 (PARI) is(n)=ispseudoprime(103*2^n-1) \\ _Charles R Greathouse IV_, Jun 13 2017
%K A050577 hard,nonn
%O A050577 1,1
%A A050577 _N. J. A. Sloane_, Dec 29 1999
%E A050577 More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), Jan 02 2008

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