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The X Factor
Posted: Tue Nov 11, 2008 11:13 am
by chrjue
Solved this with an online-tool in a blink of an eye - wow!
http://www.alpertron.com.ar/ECM.HTM
Posted: Tue Nov 11, 2008 1:39 pm
by gfoot
I used the same tool, I think. I didn't realise it had finished almost immediately - I thought it was still calculating or something!
Posted: Tue Nov 11, 2008 1:46 pm
by W1zard
I used Maple (Pollard's rho method). Time for calculation: 2.28s.
Posted: Tue Nov 11, 2008 5:53 pm
by Allosentient
I had a hard time finding a tool that could do this with large numbers. Took me awhile to find the exact link you mentioned.
Posted: Tue Feb 10, 2009 2:32 pm
by aurora
someone posted the answer at yahoo answers ... i took it from there.
Posted: Mon Mar 09, 2009 1:42 am
by misterjack
aurora wrote:someone posted the answer at yahoo answers ... i took it from there.
hrhr same here

Posted: Fri Mar 13, 2009 12:48 am
by bsguedes
factor() from Maple... easy and fast =]
Posted: Sun May 10, 2009 2:45 am
by wynksaiddestroy
Posted: Fri Oct 16, 2009 4:58 pm
by nuit
wau...in a blink mathematica told me...but i used gnu bc to calculate it

Posted: Sun Oct 25, 2009 3:28 am
by whattheh@ck
I used python...
it handles large numbers well and i simply wrote a program to increment divisors that matched some simple tests for integer factors and prime numbers. it came up with only six possible values.... just tried them all from there and found the answer

Wolfram|Alpha
Posted: Tue Nov 03, 2009 1:23 pm
by Triton456
I just used Wolfram|Alpha

Simple, but effective

Also worked for about five other challenges.
http://www.wolframalpha.com/
Greetz,
Triton456
Posted: Thu Jan 07, 2010 6:14 am
by samuelandjw
use FactorInteger function in mathematica... so fast...
Posted: Thu Jan 07, 2010 9:36 am
by CodeX
Maple and Matlab have factor() and Mathematica (so Wolfram Alpha too) has FactorInteger[] but simplest for people not familiar with any of those packages has got to be Wolfram Alpha as its free, online and spares you writing code

There's also some web pages with factoring facilities but they aren't general purpose tools or plain amazing so probably aren't worth a mention
microsoft may help
Posted: Mon Aug 23, 2010 4:22 am
by Aghamemnon
microsoft math helped me just took .05 seconds
Posted: Sat Oct 09, 2010 8:41 pm
by Aghamemnon
Aren't there any coding
I like to do things my self -->to not get bored