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A135118 Integers n such that 10^n+51 is a prime number. 1
1, 2, 3, 13, 19, 81, 658, 1009, 1070, 1731, 2899, 4237, 5499, 18628, 28699, 47026 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

If more terms exist, then they are >39456. [From Robert Price, Aug 14 2010]

See Kamada link - primecount.txt for terms, primesize.txt for discovery details including probable or proved primes - search on "10051".

LINKS

Table of n, a(n) for n=1..16.

Makoto Kamada, List of near-repdigit-related prime numbers.

Index entries for primes involving repunits.

EXAMPLE

3 is a member because 10^3+51 = 1000+51 = 1051, which is prime.

CROSSREFS

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

Sequence in context: A080359 A193507 A103087 * A274905 A234366 A084958

Adjacent sequences:  A135115 A135116 A135117 * A135119 A135120 A135121

KEYWORD

more,nonn

AUTHOR

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

EXTENSIONS

a(8)-a(15) from Robert Price, Aug 14 2010

Edited by Ray Chandler, Dec 23 2010

a(16)=47026 from Robert Price, Dec 27 2010

STATUS

approved

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