The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A109071 Numbers k such that the string k123123 is prime. 3
 2, 8, 19, 31, 37, 64, 68, 71, 79, 85, 89, 94, 100, 109, 128, 136, 137, 148, 149, 157, 170, 178, 179, 181, 184, 190, 194, 211, 215, 233, 241, 250, 251, 269, 277, 284, 290, 293, 298, 304, 310, 313, 314, 316, 317, 326, 331, 353, 355, 367, 370, 376, 386, 394, 400 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Also numbers k such that 10^6*k+123123 is prime. - Stefan Steinerberger, Mar 03 2006 LINKS Daniel Starodubtsev, Table of n, a(n) for n = 1..10000 EXAMPLE If k=2 then k123123 = 2123123 (prime). If k=94 then k123123 = 94123123 (prime). MATHEMATICA Select[Range[0, 500], PrimeQ[10^6*# + 123123] &] (* Stefan Steinerberger, Mar 03 2006 *) CROSSREFS Sequence in context: A049525 A286263 A236327 * A196134 A256321 A192136 Adjacent sequences: A109068 A109069 A109070 * A109072 A109073 A109074 KEYWORD nonn,base AUTHOR Parthasarathy Nambi, Aug 17 2005 EXTENSIONS More terms from Stefan Steinerberger, Mar 03 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 | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified May 23 15:10 EDT 2024. Contains 372763 sequences. (Running on oeis4.)