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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 near-repdigit-related 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

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Last modified September 26 05:09 EDT 2017. Contains 292502 sequences.