login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A087595 Smallest n-digit member of A087593. Define dd(k) = the number formed by concatenating the absolute difference of successive digits of k. Sequence contains smallest n-digit prime p such that dd(p) is also prime. 3
13, 101, 1009, 10009, 100363, 1000003, 10000141, 100000543, 1000000007, 10000000589, 100000000447, 1000000000063, 10000000000609, 100000000000721, 1000000000000843, 10000000000002547, 100000000000000609 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,1

COMMENTS

Conjecture: Sequence is infinite.

LINKS

Table of n, a(n) for n=2..18.

EXAMPLE

a(5) = 10009 and dd(10009) = 1009 is a prime.

CROSSREFS

Cf. A087593, A087594, A087596.

Sequence in context: A142297 A131021 A332907 * A117653 A004635 A289420

Adjacent sequences:  A087592 A087593 A087594 * A087596 A087597 A087598

KEYWORD

base,nonn

AUTHOR

Amarnath Murthy, Sep 18 2003

EXTENSIONS

More terms from David Wasserman, Jun 15 2005

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 1 02:58 EDT 2022. Contains 354947 sequences. (Running on oeis4.)