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Old 2010-11-08, 03:22   #1
sinide
 
Nov 2010

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Default who can help me factor this 155 digits number

i have a 155 digits big number,my pc is too poor, who can help me to factor it ?
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Old 2010-11-08, 04:29   #2
Batalov
 
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Do you feel comfortable asking for a couple hundred dollars from some total strangers?

...because that's what you're doing
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Old 2010-11-08, 07:46   #3
sinide
 
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my pc is very poor, if i factor using GNFS, it will last very long !
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Old 2010-11-08, 08:37   #4
schickel
 
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Quote:
Originally Posted by sinide View Post
my pc is very poor, if i factor using GNFS, it will last very long !
Mine too! But if something is important enough to me, I will put the time needed into it.

Factoring that number might become important to me for, say, $2000 US. How's that sound? Then I could buy a couple of nice quad-cores to factor it for you.
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Old 2010-11-08, 08:56   #5
retina
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Okay, I'll play. I'll do it for $1999.99
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Old 2010-11-08, 09:12   #6
em99010pepe
 
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Define poor.
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Old 2010-11-08, 12:42   #7
lorgix
 
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Quote:
Originally Posted by sinide View Post
i have a 155 digits big number,my pc is too poor, who can help me to factor it ?
Ok, on one condition;

That you correctly guess the second largest factor of the number.
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Old 2010-11-08, 14:47   #8
xilman
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Quote:
Originally Posted by sinide View Post
i have a 155 digits big number,my pc is too poor, who can help me to factor it ?
Post the number and tell me why you want its factors and I'll consider it.


Paul
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Old 2010-11-08, 14:54   #9
R.D. Silverman
 
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Quote:
Originally Posted by xilman View Post
Post the number and tell me why you want its factors and I'll consider it.


Paul
My guess is that he is trying to break someone's 512-bit RSA key.
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Old 2010-11-08, 19:33   #10
CRGreathouse
 
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Quote:
Originally Posted by R.D. Silverman View Post
My guess is that he is trying to break someone's 512-bit RSA key.
No doubt.
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Old 2010-11-08, 23:27   #11
Uncwilly
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This is at least the 6th such thread: recent/un-registered, asking to factor a >120 digit number, and 'knowing' it is composite.

Last fiddled with by Uncwilly on 2010-11-08 at 23:27
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