%I #21 Sep 07 2021 02:16:10
%S 0,1,2,4,6,8,50,54,102,134,212,872,3055,3427,3528,4262,4414,6084,93792
%N Integers k such that 6*10^k + 41 is a prime number.
%C See Kamada link - primecount.txt for terms, primesize.txt for discovery details including probable or proved primes - search on "60041".
%C a(20) > 10^5. - _Robert Price_, Jan 19 2017
%H Makoto Kamada, <a href="https://stdkmd.net/nrr/prime/">List of near-repdigit-related prime numbers</a>.
%H <a href="/index/Pri#Pri_rep">Index entries for primes involving repunits</a>.
%e k = 4 is a term because 6*10^4 + 41 = 6*10000 + 41 = 60000 + 41 = 60041, which is a prime number.
%Y Cf. A049054, A088274, A088275, A095688, A107083, A108049, A108050, A108052, A108054.
%K nonn,more
%O 1,3
%A Julien Peter Benney (jpbenney(AT)ftml.net), Oct 04 2005
%E a(18) from _Ray Chandler_, Dec 23 2010
%E a(1)-a(2) prepended by _Robert Price_, Jan 19 2017
%E a(19) from _Robert Price_, Jan 19 2017