HP 41C Pollard Brent Integer Factorization

07082014, 06:20 AM
Post: #9




RE: HP 41C Pollard Brent Integer Factorization
(07072014 12:27 PM)Gerald H Wrote: Is the NP programme written in a lower level language? No. 100% standard HP41 user language, not even any synthetics. Listing can be found on page 347 of the PPC ROM User's Manual. (07072014 12:27 PM)Gerald H Wrote: Where can I find documentation on "Finding Factors Faster"? Jim  help me here, I can't find your 1979 reference. Here are the fastest factorizer articles by you that I have been able to find, not including the earlier ones: • PPC Journal Vol. 5, No. 2 (March 1978). HP67 program on page 22. Timing is stated to be 0.1043*sqrt(N)+2.5 seconds, for prime N. • PPC Journal Vol. 5, No. 3 (April 1978). Article on pages 78 describes the HP67 program in the previous issue as being a MOD 60 program, not MOD 210. In fact, the article says, "Thus, while a mod 210 factor finder is feasible on a '67, it is slower than a mod 30 due to increased overhead time." No new program was presented in this article; it was an overview of all prime factorizers published in PPC Journal up to that time. • PPC Journal Vol. 8, No. 5 (July 1981). HP41 program on page 19. Timing is stated to be 0.035*sqrt(N). It was the "fastest known factoring program" at that time. 100% standard HP41 user language (no synthetics). <0ɸ0> Joe 

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Messages In This Thread 
HP 41C Pollard Brent Integer Factorization  Gerald H  07042014, 07:07 PM
RE: HP 41C Pollard Brent Integer Factorization  Joe Horn  07052014, 09:11 PM
RE: HP 41C Pollard Brent Integer Factorization  Gerald H  07062014, 05:41 AM
RE: HP 41C Pollard Brent Integer Factorization  Gerald H  07062014, 06:55 AM
RE: HP 41C Pollard Brent Integer Factorization  Joe Horn  07072014, 05:55 AM
RE: HP 41C Pollard Brent Integer Factorization  Jim Horn  07072014, 06:04 AM
RE: HP 41C Pollard Brent Integer Factorization  Joe Horn  07072014, 12:02 PM
RE: HP 41C Pollard Brent Integer Factorization  Gerald H  07072014, 12:27 PM
RE: HP 41C Pollard Brent Integer Factorization  Joe Horn  07082014 06:20 AM

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