|
%I #21 Jan 25 2022 08:46:22
%S 1,3,4,10,12,16,33,696,739,1764,2577,3198,4242,11104,18081,19587,
%T 20799,22986,92178
%N Integers k such that 10^k + 61 is a prime number.
%C The next term, if one exists is > 100000. - _Robert Price_, Jul 14 2010
%C See Kamada link - primecount.txt for terms, primesize.txt for discovery details including probable or proved primes - search on "10061".
%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 4 is a term because 10^4 + 61 = 10000 + 61 = 10061, which is a prime number.
%Y Cf. A095688, A108052, A108050, A108312, A107083, A108049, A108054.
%K nonn,more
%O 1,2
%A Julien Peter Benney (jpbenney(AT)gmail.com), Feb 12 2008
%E Term 11104 from _Robert Price_, Mar 22 2010
%E Terms 1764, 2577, 3198, 4242, 18081, 19587, 20799, 22986 from _Robert Price_, Jul 14 2010
%E Edited by _Ray Chandler_, Dec 23 2010
%E a(19)=92178 from _Robert Price_, Apr 19 2011
|
