login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Palindromes that are a product of consecutive primes.
3

%I #12 Aug 13 2020 14:02:28

%S 1,2,3,5,6,7,11,77,101,131,151,181,191,313,323,353,373,383,727,757,

%T 787,797,919,929,1001,5005,10301,10501,10601,11311,11411,12421,12721,

%U 12821,13331,13831,13931,14341,14741,15451,15551,16061,16361,16561,16661

%N Palindromes that are a product of consecutive primes.

%C Intersection of A002113 and A073485. - _Reinhard Zumkeller_, May 31 2010

%H Donovan Johnson, <a href="/A169829/b169829.txt">Table of n, a(n) for n = 1..5000</a>

%H Erich Friedman, <a href="https://erich-friedman.github.io/numbers.html">What's Special About This Number?</a> (See entry 1001.)

%e 323 = 17*19.

%t f[n_] := Select[ FoldList[ Times, 1, Prime[ Range[n, n + 4]]], # == FromDigits@ Reverse@ IntegerDigits@# &]; k = 1; lst = {}; While[k < 10^4, AppendTo[lst, f@k]; k++ ]; lst = Union@ Flatten@ lst (* _Robert G. Wilson v_, Jun 10 2010 *)

%Y Cf. A002113.

%K nonn,base

%O 1,2

%A _N. J. A. Sloane_, May 30 2010

%E More terms from _Robert G. Wilson v_ and _Jon E. Schoenfield_, Jun 10 2010