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

 

Logo

The October issue of the Notices of the Amer. Math. Soc. has an article about the OEIS.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A090921 Smallest prime of the form concatenation n, 2n, 3n,...kn and 1. 0
11, 241, 31, 41, 5101, 61, 71, 8161, 9181, 101, 1122334455661, 12241, 131, 14281, 151, 1632481, 17341, 181, 191, 2040601, 211, 22441, 234669921151, 241, 251 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Next term a(26) has 116 digits; k = 39 and is too large to include - David Wasserman, Feb 15 2006

LINKS

Table of n, a(n) for n=1..25.

CROSSREFS

Sequence in context: A158297 A296170 A264465 * A089328 A077422 A267642

Adjacent sequences:  A090918 A090919 A090920 * A090922 A090923 A090924

KEYWORD

base,nonn

AUTHOR

Amarnath Murthy, Dec 16 2003

EXTENSIONS

More terms from David Wasserman, Feb 15 2006

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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 25 01:17 EDT 2018. Contains 315360 sequences. (Running on oeis4.)