Near primes to Mnr = A001228(26) = 808017424794512875886459904961710757005754368000000000, also called the Monster number, cf. A003131.
808017424794512875886459904961710757005754367999999957
1 seqfan posts
Fri Aug 26 15:01:43 CEST 2011 [seqfan] Re: Largest (a1) in the OEIS