Mersenne: Maybe the #######th Mersenne prime???!!!

[Elias Daher]

Hey everybody, Look at that:                             (2^2-1) is prime! (=3)                                                         (2^[2^2-1]-1) is prime! (=7)                                                         (2^[2^(2^2-1)-1]-1) is prime! (=127)                                                         (2^[2^(2^[2^2-1]-1)-1]-1) is prime! (=170141183460469231731687303715884105727)                             So why wouldn't:    (2^[2^(2^[2^(2^2-1)-1]-1)-1]-1) be prime?! (=2^170141183460469231731687303715884105727-1)   Well, I wish I will live enough (maybe thousands of years!!!) to see this number tested!                         Elias Daher