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Old 2011-08-23, 04:59   #7
Andi47
 
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Oct 2004
Austria

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Quote:
Originally Posted by Stargate38 View Post
Here's a poly from factordb for 91987-1 (166 digit cofactor): http://www.factordb.com/snfs.php?id=1100000000225474717
Quote:
Originally Posted by frmky View Post
This auto-generated polynomial doesn't take advantage of the known algebraic factor. I agree that the original sextic is the obvious choice.
Quote:
Originally Posted by wblipp View Post
BAD CHOICE.

This is difficulty 258 digits, MUCH MUCH harder than the 178 digits example I gave.

It looks like the factordb's polynomial finder needs to learn some tricks about removing algebraic factors.

William
I just posted the above quotes to the factordb thread to make Syd aware of those.
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