

A135107


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


1



1, 2, 3, 9, 10, 14, 19, 67, 94, 201, 241, 589, 934, 1151, 1179, 4957, 6329, 13621, 26425
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OFFSET

1,2


COMMENTS

The next term, if one exists, is >100000.  Robert Price, Apr 25 2011
See Kamada link  primecount.txt for terms, primesize.txt for discovery details including probable or proved primes  search on "10097".


LINKS

Table of n, a(n) for n=1..19.
Makoto Kamada, List of nearrepdigitrelated prime numbers.
Index entries for primes involving repunits.


EXAMPLE

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


MATHEMATICA

Select[Range[2000], PrimeQ[10^# + 97] &] (* Vincenzo Librandi, Nov 02 2014 *)


PROG

(MAGMA) [n: n in [1..500] IsPrime(10^n+97)]; // Vincenzo Librandi, Nov 02 2014


CROSSREFS

Cf. A095688, A108052, A108050, A108312, A107083, A108049, A108054.
Sequence in context: A214433 A257026 A057291 * A191568 A279549 A030743
Adjacent sequences: A135104 A135105 A135106 * A135108 A135109 A135110


KEYWORD

more,nonn


AUTHOR

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


EXTENSIONS

a(14)a(19) from Robert Price, Nov 06 2010
Edited by Ray Chandler, Dec 23 2010


STATUS

approved



