login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A110716 Beginning with 3, concatenation of n successive numbers such that every partial concatenation is a prime. 5
3, 67, 123, 60616263, 153154155156157, 787980818283, 41424344454647, 9969979989991000100110021003, 656667686970717273, 384385386387388389390391392393, 229230231232233234235236237238239 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..11.

EXAMPLE

3,367,367123,...are all primes.

CROSSREFS

Cf. A110714, A110715, A110717.

Sequence in context: A065425 A096482 A139868 * A142035 A142926 A041983

Adjacent sequences:  A110713 A110714 A110715 * A110717 A110718 A110719

KEYWORD

base,nonn

AUTHOR

Amarnath Murthy, Aug 05 2005

EXTENSIONS

More terms from Sean A. Irvine, Mar 18 2010

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 23 04:54 EDT 2020. Contains 337295 sequences. (Running on oeis4.)