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A323007 Numbers k such that 365*2^k+1 is prime. 0

%I

%S 5,11,19,63,93,95,103,147,275,293,539,623,1115,1181,1691,1811,2711,

%T 2919,3467,4067,5115,5815,6279,7877,8831,18717,24399,25125,27199,

%U 32823,122075,162789,276735,561783,586189,1577413,2355607,2494991

%N Numbers k such that 365*2^k+1 is prime.

%H Ray Ballinger, <a href="http://www.prothsearch.com/index.html">Proth Search Page</a>

%H Ray Ballinger and Wilfrid Keller, <a href="http://www.prothsearch.com/riesel1a.html">List of primes k.2^n + 1 for 300 < k < 600</a>

%H Y. Gallot, <a href="http://www.utm.edu/research/primes/programs/gallot/index.html">Proth.exe: Windows Program for Finding Large Primes</a>

%H Wilfrid Keller, <a href="http://www.prothsearch.com/riesel2.html">List of primes k.2^n - 1 for k < 300</a>

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/ProthPrime.html">Proth Prime</a>

%H <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>

%t Select[Range[1000], PrimeQ[365*2^# + 1] &] (* _Robert Price_, Jan 01 2019 *)

%K nonn,more,hard

%O 1,1

%A _Robert Price_, Jan 01 2019

%E a(37)-a(38) from _Jeppe Stig Nielsen_, Jan 04 2020

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Last modified April 22 16:06 EDT 2021. Contains 343177 sequences. (Running on oeis4.)