*To*: mathgroup@smc.vnet.net*Subject*: [mg11156] Any interest (Wolfram or general) in fast multiply?*From*: "Wendy Hartman" <wendytangoalephzero@worldnet.att.net>*Date*: Mon, 23 Feb 1998 21:41:14 -0500*Organization*: AT&T WorldNet Services

Does anyone know if Wolfram (or anyone else for that matter) has any interest in replacing the _Integer multiplication N^1.58 code with N logN code (i.e. Karatsuba algorithm with some form of discrete transform such as Fourier)? I am interested in large primes, and when you get to 10 or 20 thousand digits, a factor of Sqrt[N] would be greatly appreciated... For a look at the discrete transform stuff see the WEB pages dealing with GIMPS (Great Internet Mersenne Prime Search) or Proth.exe (finds Proth's theorem primes of size tens of thousands of digits...) ... thanks for any replies (a beginner who remembers using Macsyma in 1973 .. vive la difference!!!)