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-   -   New online applet for factorization (https://www.mersenneforum.org/showthread.php?t=15294)

ET_ 2011-02-22 14:45

[QUOTE=smh;253388]Why does it such small batches?[/QUOTE]

Because I don't want to overload the server... :smile:
It's still in beta (alpha?) testing.

Luigi

ET_ 2011-02-22 14:48

[QUOTE=CedricVonck;253390]I have another issue ... when I click a random number, Firefox always says: 'No factor found' before returning to the startpage :question:[/QUOTE]

You've not been lucky...
When you find a factor, the server answers "Factor found : xxxxxxx" before loading the startpage.

Luigi

P.S. I noticed that someone has already discovered a more-than-57-bit factor!
P.P.S. Maybe I'll have to insert some new exponent to the queue...

ET_ 2011-02-22 14:50

[QUOTE=firejuggler;253389]34.5850 bits , k=3
35.0000 bits, k= 4
35.3219 bits, k=5
35.8074 bits, k=7
.....
55.3532 bits, k= 5357831
57.0992 bits, k=2^3*7 * 320923
hmmm pm1 would have been a better method there[/QUOTE]

Written in php, with less than 50 lines of code, and running in batches of 3-4 seconds? I doubt it... :smile:

Luigi

Uncwilly 2011-02-22 16:51

[QUOTE=ET_;253397]Written in php, with less than 50 lines of code, and running in batches of 3-4 seconds? I doubt it... :smile:[/QUOTE]
Is this a machine that you have full time control over? Or have you figure out a way to get time on this machine by doing "fancy webpages"?

Suggestion:
Add a button to the right of the stats that says something like "Test a 'Random' number from the list".
Have it find the number with the lowest 'k' that has no known factor and test it.

Uncwilly 2011-02-22 18:53

What is the significance of the range?

firejuggler 2011-02-22 21:51

mfaktc can only test TF up to 2^32-1. After, you have to use either factor5 (which is much slower) or use ET_ applet, which doesn't move fast either,but can help you relieve your boredoom, as each test take 4 or 5 seconds.
an other reason could be to see how evolve k in that range , its distribution... or will edington interest in 'large' mersenne factor. Or, even less probable, just a challenge in PHP, and revelant to the interest of ET?

ET_ 2011-02-23 13:32

[QUOTE=Uncwilly;253406]Is this a machine that you have full time control over? Or have you figure out a way to get time on this machine by doing "fancy webpages"?

Suggestion:
Add a button to the right of the stats that says something like "Test a 'Random' number from the list".
Have it find the number with the lowest 'k' that has no known factor and test it.[/QUOTE]

That's a good point, especially when the list grows up! :smile:
I hope I can add it next Friday.

Luigi

ET_ 2011-02-23 13:35

[QUOTE=Uncwilly;253424]What is the significance of the range?[/QUOTE]

I started from where mfaktc stops.

Luigi

ET_ 2011-02-23 13:37

[QUOTE=firejuggler;253447]Another reason could be to see how evolve k in that range , its distribution... or will edington interest in 'large' mersenne factor. Or, even less probable, just a challenge in PHP, and revelant to the interest of ET?[/QUOTE]

All your guesses are exact... :smile:

Luigi

ppo 2011-02-23 22:10

are factors shown incorrectly ?
 
factors in the exponent table are not equal to 2kp+1. Am I wrongly interpreting your table ? For instance in the second row:
for P=4294967357 you list K=35000535 and Factor=34359738857,
but if I am not mistaken, this factor gives a k value of 4.
Can you tell me where I am wrong?

ET_ 2011-02-23 22:15

[QUOTE=ppo;253542]factors in the exponent table are not equal to 2kp+1. Am I wrongly interpreting your table ? For instance in the second row:
for P=4294967357 you list K=35000535 and Factor=34359738857,
but if I am not mistaken, this factor gives a k value of 4.
Can you tell me where I am wrong?[/QUOTE]

For the bit depth of factors you should check [URL="http://www.moregimps.it/mersenne-test/factors.php"]here[/URL] :smile:

The exponents table shows how deep each exponent has been trial-factored.

Luigi


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