Prime related questions

[Hugo Pfoertner]

Jason Earls wrote:
> 
> Dear Seqfans,
> 
>  I recently found these twin probable primes:
> 
>  2357*2^7532+105525
> 2357*2^7532+105527
> (2271 digits)
> 
>  Anyone know of databases that keep track of these? They shouldn't be in the
> OEIS, should they?

Chris Caldwell maintains the authoritative list of biggest known primes;
it includes also a section on twin primes.
See http://primes.utm.edu/largest.html#twin or
http://primes.utm.edu/primes/search.php?Number=200&Comment=Twin|Triplet

Your examples are off by many orders of magnitude from the record zone.
(the biggest currently known twin pair has 58711 digits)

Hugo