This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A120828 Primes with n consecutive digits descending beginning with the digit one. 2
 3, 5, 35, 139, 153, 253, 1053, 2015, 3703 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Digits are in descending order beginning with 1 and after 0 comes 9. LINKS EXAMPLE 5 is a term since 10987 is a prime. MATHEMATICA fQ[n_] := PrimeQ@ FromDigits@ Mod[2-Range@n, 10]; lst = {}; Do[ If[fQ@n, AppendTo[lst, n]; Print@n], {n, 6000}]; lst CROSSREFS Cf. A120804, A120819 A120829. Sequence in context: A001790 A173092 A057908 * A077784 A325582 A145640 Adjacent sequences:  A120825 A120826 A120827 * A120829 A120830 A120831 KEYWORD base,hard,nonn AUTHOR Robert G. Wilson v, Jul 05 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
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified October 20 02:03 EDT 2019. Contains 328244 sequences. (Running on oeis4.)