

A135112


Integers n such that 10^n+93 is a prime number.


1



1, 2, 3, 4, 9, 61, 78, 116, 632, 1184, 2034, 3870, 3914, 6456, 12464, 58250
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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 "10093".


LINKS

Table of n, a(n) for n=1..16.
Makoto Kamada, List of nearrepdigitrelated prime numbers.
Index entries for primes involving repunits.


EXAMPLE

4 is a member: 10^4+93 = 10000+93 = 10093, which is a prime number.


MATHEMATICA

Select[Range[2000], PrimeQ[10^# + 93] &] (* Vincenzo Librandi, Nov 02 2014 *)


PROG

(MAGMA) [n: n in [1..500] IsPrime(10^n+93)]; // Vincenzo Librandi, Nov 02 2014


CROSSREFS

Cf. A095688, A108052, A108050, A108312, A107083, A108049, A108054.
Sequence in context: A076018 A076017 A245366 * A286709 A082865 A265348
Adjacent sequences: A135109 A135110 A135111 * A135113 A135114 A135115


KEYWORD

more,nonn


AUTHOR

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


EXTENSIONS

a(1)=1 added by Vladimir Joseph Stephan Orlovsky, May 02 2008
a(4) corrected by Vladimir Joseph Stephan Orlovsky, May 02 2008
a(10)a(15) by Robert Price, Dec 12 2010
Edited by Ray Chandler, Dec 23 2010
a(16)=58250 from Robert Price, Jan 29 2011


STATUS

approved



