a 27 digit twin prime pair
 

I found this pair of 27 digit twin primes:


1- 149907114776274341482621993
2- 149907114776274341482621991




I would know if it is possible with Pari or Pfgw to find the next and the previous pair of twin primes?

Yes, it is possible, and it takes less than a second to run.


[CODE]gp > n=149907114776274341482621993; while((m=nextprime(n+1))-n>2, n=m); n
%1 = 149907114776274341482622207[/CODE]


The other direction exercise for you.

149907114776274341482621993
 

149907114776274341482621993 is the concatenation in base ten of the prime factors of 25!-1