Mersenne: Completely factorized (2^n-1)(2^n+1)

[Tony Forbes]

Can anyone help?

I am looking for odd numbers n (not necessarily prime), n not divisible
by 3, n > 1000 such that both 2^n-1 and 2^n+1 have been completely
factorized into primes. 

The Cunningham tables give 1121 and I have been unable to find any more.
However, there has been a lot of recent factorizing activity and my
sources may well be out of date. 

I am also interested to know who found the factors 58142098448088409 and
359071640268582342735956401 of 2^1121+1.

Thanks,

-- 
Tony Forbes