login
This site is supported by donations to The OEIS Foundation.

 

Logo

Annual Appeal: Today, Nov 11 2014, is the 4th anniversary of the launch of the new OEIS web site. 70,000 sequences have been added in these four years, all edited by volunteers. Please make a donation (tax deductible in the US) to help keep the OEIS running.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A083989 Concatenation of prime k and its 10's complement is a prime. 2
3, 7, 17, 23, 29, 31, 41, 43, 53, 67, 71, 83, 109, 127, 139, 151, 173, 179, 197, 211, 229, 263, 271, 281, 307, 359, 463, 547, 557, 569, 587, 593, 673, 677, 683, 691, 701, 719, 727, 757, 769, 823, 839, 881, 883, 887, 907, 937, 983, 997, 1087, 1103, 1171, 1181 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..54.

EXAMPLE

43 belongs to this sequence as 4357 is also a prime.

CROSSREFS

Cf. A083990.

Sequence in context: A093651 A181420 A018411 * A152451 A097958 A118940

Adjacent sequences:  A083986 A083987 A083988 * A083990 A083991 A083992

KEYWORD

base,nonn

AUTHOR

Amarnath Murthy, May 23 2003

EXTENSIONS

More terms from Jason Earls (zevi_35711(AT)yahoo.com), Jun 01 2003

STATUS

approved

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

Content is available under The OEIS End-User License Agreement .

Last modified December 18 06:09 EST 2014. Contains 252079 sequences.