Re: [PrimeNumbers] Palindromic prime pi(n) of palindromic prime n
- Zak Seidov wrote:
> For n up to 3,000,000,b) in http://www.primepuzzles.net/puzzles/puzz_051.htm asks for the next.
> there are only 3 cases of
> palindromic prime pi(n) of palindromic prime n:
> n=3,5,11, with pi(n)=2,3,5.
> Can anyone find other cases?
It reports exhaustive searching found 3 cases with palindromic composite
pi(11) = 5
pi(143787341) = 8114118
pi(11853735811) = 535252535 (found by Giovanni Resta)
Jens Kruse Andersen