a new Wagstaff prime

[Jonathan Post]

Since the digital reversal 191689 is prime, the prime exponent 986191
is an emirp.

There, I mixed a serious and impressive result with a base sequence
that not everyone cares for;)

And if you turn that reversal upside-down, you get 689161 = 11 * 31 *
43 * 47 which is a 4-brilliant number.  What's that sound?  Wagstaff
rolling in his grave?  Sorry...

On 6/19/08, Max Alekseyev <maxale at gmail.com> wrote:
> A new Wagstaff (probable) prime has been found: (2^986191+1)/3.
>  Currently it takes the 4th place in PRP Records:
>  http://www.primenumbers.net/prptop/prptop.php
>
>  Please update A000978
>
>  Regards,
>
> Max
>