----- Original Message ----- From: "Nathan Russell" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Sunday, November 18, 2001 5:24 PM Subject: Re: Mersenne: hi everyone
> I cannot help wondering if this is the sequence M(2), M(M(2)), M(M(M(2))), > etc, which is indeed prime for all terms even vaguely capable of testing > at the present time. > > The problem is that 90 digits in the exponent seems high for M(M(127)), > the next term in the sequence. My understanding is, that in the absence of any number-theoretical reason to believe this sequence always prime (or otherwise to believe M(M(127)) prime), it's generally expected to be composite. > Nathan Daran G. _________________________________________________________________________ Unsubscribe & list info -- http://www.ndatech.com/mersenne/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers
