

A135115


Integers n such that 10^n+63 is a prime number.


1



1, 2, 3, 11, 12, 37, 42, 64, 101, 131, 170, 366, 404, 771, 1454, 1696, 4415, 5208, 9027, 10978, 11264, 11651, 14432, 20655, 28220, 34623, 62523, 63986
(list;
graph;
refs;
listen;
history;
text;
internal format)



OFFSET

1,2


COMMENTS

If another term exists it is >100000. [From Robert Price, Apr 25 2011]
See Kamada link  primecount.txt for terms, primesize.txt for discovery details including probable or proved primes  search on "10063".


LINKS

Table of n, a(n) for n=1..28.
Makoto Kamada, List of nearrepdigitrelated prime numbers.
Index entries for primes involving repunits.


EXAMPLE

3 is a member because 10^3+63 = 1000+63 = 1063, which is prime.


MATHEMATICA

Select[Range[2000], PrimeQ[10^#+63]&] [From Harvey P. Dale, Jul 24 2009]


CROSSREFS

Cf. A095688, A108052, A108050, A108312, A107083, A108049, A108054.
Sequence in context: A062936 A136972 A227764 * A107402 A082618 A020610
Adjacent sequences: A135112 A135113 A135114 * A135116 A135117 A135118


KEYWORD

more,nonn


AUTHOR

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


EXTENSIONS

Two additional terms provided Harvey P. Dale, Jul 24 2009
Added one term: 14432. Robert Price, Mar 22 2010
Added 8 new terms. Robert Price, Aug 14 2010
Edited by Ray Chandler, Dec 23 2010
a(27:28)=62523,63986 from Robert Price, Jan 29 2011


STATUS

approved



