Search: id:A111021
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%I A111021
%S A111021 8,11,143,203,2727,2911,3339
%N A111021 Integers n such that 7*10^n+31 is a prime number.
%C A111021 Some of the larger entries may only correspond to probable primes.
%e A111021 n = 11 is a member because: 7*10^11+31 = 7*100000000000+31 = 700000000000+31 
               = 700000000031, which is a prime
%Y A111021 Cf. A049054, A088274, A088275, A095688, A107083, A108049, A108050, A108052, 
               A108054, A110980.
%Y A111021 Sequence in context: A006072 A074042 A140478 this_sequence A126814 A037449 
               A070477
%Y A111021 Adjacent sequences: A111018 A111019 A111020 this_sequence A111022 A111023 
               A111024
%K A111021 nonn
%O A111021 1,1
%A A111021 Julien Peter Benney (jpbenney(AT)ftml.net), Oct 04 2005

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