Re: Mersenne: Slaying Cdplayers for prime95
Dear Brian Thank you for your long and detailed response. I will surely follow it carefully. Lampros . _ Unsubscribe list info -- http://www.ndatech.com/mersenne/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers
Mersenne: Russian anyone?
Hey, Are there any readers that can help a Russian user install prime95 on a computer? If so, let me know and I'll forward your email address to the user. Thanks, George _ Unsubscribe list info -- http://www.ndatech.com/mersenne/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers
RE: Mersenne: Factors
Hoogendoorn, Sander writes: Torben Schlaqntz wrote: It seems to me that this k (in 2kp+1) is never: 4,12,20,28,36,46,52,60,68,76,84 at least for less than M416.947. Am I again a fool for a pattern already proved? It has been proven that k = 1 or 7 mod 8 Careful! It has been proven that _factors_ are of that form, not that the k's (of 2*k*p + 1 where 2*k*p + 1 is a factor of M(p)) are of that form. k, in fact, can be 0 mod 4, e.g., since, if a factor is 1 mod 8: factor = 2*k*p + 1 = 1 (mod 8) 2*k*p = 0 (mod 8) k*p = 0 (mod 4) k = 0 (mod 4) ... since p, being prime, is not 0 mod 4. This occurs, e.g., for M(11), as one of the factors is 89. Will _ Unsubscribe list info -- http://www.ndatech.com/mersenne/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers
SV: Mersenne: just some comments to improve our site
Daran wrote: Have we sent a newletter since finding M#39? No, no that I'm aware of. But we might have raised limit of numbers factorized by several 1000's. Or the highest number just being handed out by the primenet server has reasched some limit worthwhile mentioning. br tsc _ Unsubscribe list info -- http://www.ndatech.com/mersenne/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers
