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A135107 Integers n such that 10^n+97 is prime. 1

%I

%S 1,2,3,9,10,14,19,67,94,201,241,589,934,1151,1179,4957,6329,13621,

%T 26425

%N Integers n such that 10^n+97 is prime.

%C The next term, if one exists, is >100000. - _Robert Price_, Apr 25 2011

%C See Kamada link - primecount.txt for terms, primesize.txt for discovery details including probable or proved primes - search on "10097".

%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 n = 3 is a member because 10^3+97 = 1000+97 = 1097, which is prime.

%t Select[Range[2000], PrimeQ[10^# + 97] &] (* _Vincenzo Librandi_, Nov 02 2014 *)

%o (MAGMA) [n: n in [1..500]| IsPrime(10^n+97)]; // _Vincenzo Librandi_, Nov 02 2014

%Y Cf. A095688, A108052, A108050, A108312, A107083, A108049, A108054.

%K more,nonn

%O 1,2

%A Julien Peter Benney (jpbenney(AT)gmail.com), Feb 12 2008

%E a(14)-a(19) from _Robert Price_, Nov 06 2010

%E Edited by _Ray Chandler_, Dec 23 2010

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Last modified November 18 19:59 EST 2019. Contains 329288 sequences. (Running on oeis4.)