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Topic: JSH: Upside down situation
Replies: 66   Last Post: Mar 21, 2008 11:05 AM

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rossum

Posts: 725
Registered: 12/13/04
Re: JSH: Upside down situation
Posted: Mar 16, 2008 5:27 PM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

On Sun, 16 Mar 2008 11:29:43 -0700 (PDT), JSH <jstevh@gmail.com>
wrote:

>It took 10 seconds for this still relatively small number. Now what
>does your code do?
>
>Example 20484149553887

That is a 45 bit number. How fast was your code for a 35 bit number?
The ratio between the two will tell you how much to multiply by for
every ten bit increment in size. Then work out how long a 500 bit
number will take. For a more accurate timing do a number of
factorisations in a tight loop and average out the time.

My code is set up to factor Java positive integers, up to 31 bits. At
the moment, while your method is still in flux, I do not want to spend
the time chasing a moving target. I have done enough timings to
satisfy myself that your method is not fast enough to factor an RSA
number. If you disagree then you are free to post your timings here.
Better still, post the factors of an RSA number.

When you have a settled version I may take the time to recode to cover
longs. Until you have a settled version I will not bother. As I
said, you are free to provide your own timings.

rossum



Date Subject Author
3/14/08
Read JSH: Upside down situation
jstevh@gmail.com
3/14/08
Read Re: JSH: Upside down situation
mensanator
3/14/08
Read Re: JSH: Upside down situation
jstevh@gmail.com
3/14/08
Read Re: JSH: Upside down situation
drtek
3/14/08
Read Re: Upside down situation
Ryugyong Hotel
3/14/08
Read Re: JSH: Upside down situation
jstevh@gmail.com
3/15/08
Read Re: JSH: Upside down situation
drtek
3/15/08
Read Re: JSH: Upside down situation
mensanator
3/15/08
Read Re: JSH: Upside down situation
Jesse F. Hughes
3/15/08
Read Re: JSH: Upside down situation
Vend
3/15/08
Read Re: JSH: Upside down situation
jstevh@gmail.com
3/15/08
Read Re: JSH: Upside down situation
David Bernier
3/16/08
Read Re: JSH: Upside down situation
rossum
3/16/08
Read Re: JSH: Upside down situation
Michael Press
3/16/08
Read Re: JSH: Upside down situation
MTBrenneman@gmail.com
3/16/08
Read Re: JSH: Upside down situation
Archie Nomad
3/17/08
Read Re: JSH: Upside down situation
Michael Press
3/17/08
Read Re: JSH: Upside down situation
Archie Nomad
3/17/08
Read Re: JSH: Upside down situation
Michael Press
3/16/08
Read Re: JSH: Upside down situation
mensanator
3/16/08
Read Re: JSH: Upside down situation
Archie Nomad
3/17/08
Read Re: JSH: Upside down situation
MTBrenneman@gmail.com
3/17/08
Read Re: JSH: Upside down situation
Michael Press
3/18/08
Read Re: JSH: Upside down situation
Tim Little
3/17/08
Read Re: JSH: Upside down situation
MTBrenneman@gmail.com
3/18/08
Read Re: JSH: Upside down situation
Tim Little
3/20/08
Read Re: JSH: Upside down situation
Pubkeybreaker
3/17/08
Read Re: JSH: Upside down situation
Rotwang
3/17/08
Read Re: JSH: Upside down situation
Michael Press
3/17/08
Read Re: JSH: Upside down situation
drtek
3/18/08
Read Re: JSH: Upside down situation
rossum
3/18/08
Read Re: JSH: Upside down situation
Randy Poe
3/18/08
Read Re: JSH: Upside down situation
rossum
3/18/08
Read Re: JSH: Upside down situation
jstevh@gmail.com
3/19/08
Read Re: JSH: Upside down situation
Michael Press
3/18/08
Read Re: JSH: Upside down situation
mensanator
3/19/08
Read Re: JSH: Upside down situation
Tim Smith
3/20/08
Read Re: JSH: Upside down situation
Pubkeybreaker
3/16/08
Read Re: JSH: Upside down situation
jstevh@gmail.com
3/16/08
Read Re: JSH: Upside down situation
rossum
3/17/08
Read Re: JSH: Upside down situation
jstevh@gmail.com
3/17/08
Read Re: JSH: Upside down situation
Canaan Banana
3/17/08
Read Re: JSH: Upside down situation
MTBrenneman@gmail.com
3/17/08
Read Re: JSH: Upside down situation
Marshall
3/17/08
Read Re: JSH: Upside down situation
drtek
3/17/08
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litsohate@yahoo.com
3/16/08
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Vend
3/17/08
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Rupert
3/17/08
Read Re: JSH: Upside down situation
rossum
3/18/08
Read Re: JSH: Upside down situation
jstevh@gmail.com
3/19/08
Read Re: JSH: Upside down situation
David Bernier
3/19/08
Read Re: JSH: Upside down situation
rossum
3/19/08
Read Re: JSH: Upside down situation
jstevh@gmail.com
3/19/08
Read Re: JSH: Upside down situation
Rotwang
3/19/08
Read Re: JSH: Upside down situation
rossum
3/19/08
Read Re: JSH: Upside down situation
jstevh@gmail.com
3/19/08
Read Re: JSH: Upside down situation
drtek
3/20/08
Read Re: JSH: Upside down situation
rossum
3/19/08
Read Re: JSH: Upside down situation
Pubkeybreaker
3/19/08
Read Re: JSH: Upside down situation
rossum
3/19/08
Read Re: JSH: Upside down situation
Phil Carmody
3/20/08
Read Re: JSH: Upside down situation
Pubkeybreaker
3/20/08
Read Re: JSH: Upside down situation
drtek
3/21/08
Read Re: JSH: Upside down situation
rossum
3/19/08
Read Re: JSH: Upside down situation
tinyurl.com/uh3t
3/21/08
Read Re: JSH: Upside down situation
jstevh@gmail.com
3/21/08
Read Re: JSH: Upside down situation
drtek

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