## [Maxima-bugs] [ maxima-Bugs-1384806 ] factor((x^15+1)^15-(x^15-1)^15) wrong

 [Maxima-bugs] [ maxima-Bugs-1384806 ] factor((x^15+1)^15-(x^15-1)^15) wrong From: SourceForge.net - 2005-12-19 01:51:17 ```Bugs item #1384806, was opened at 2005-12-19 01:51 Message generated for change (Tracker Item Submitted) made by Item Submitter You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=1384806&group_id=4933 Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: None Group: None Status: Open Resolution: None Priority: 5 Submitted By: Waldek Hebisch (hebisch) Assigned to: Nobody/Anonymous (nobody) Summary: factor((x^15+1)^15-(x^15-1)^15) wrong Initial Comment: factor((x^15+1)^15-(x^15-1)^15) gives: 30 180 150 120 2 (3 x + 1) (5 x + 150 x + 951 x 90 60 30 + 1828 x + 1059 x + 102 x + 1) However, the second factor is composite, it is (5*x^60 + 10*x^30 + 1)* (x^120 + 28*x^90 + 134*x^60+ 92*x^30 +1) This happens on Maxima 5.9.2 on AMD64 using Clisp and on 5.9.1 using gcl (both AMD64 and i386) ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=1384806&group_id=4933 ```

 [Maxima-bugs] [ maxima-Bugs-1384806 ] factor((x^15+1)^15-(x^15-1)^15) wrong From: SourceForge.net - 2005-12-19 01:51:17 ```Bugs item #1384806, was opened at 2005-12-19 01:51 Message generated for change (Tracker Item Submitted) made by Item Submitter You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=1384806&group_id=4933 Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: None Group: None Status: Open Resolution: None Priority: 5 Submitted By: Waldek Hebisch (hebisch) Assigned to: Nobody/Anonymous (nobody) Summary: factor((x^15+1)^15-(x^15-1)^15) wrong Initial Comment: factor((x^15+1)^15-(x^15-1)^15) gives: 30 180 150 120 2 (3 x + 1) (5 x + 150 x + 951 x 90 60 30 + 1828 x + 1059 x + 102 x + 1) However, the second factor is composite, it is (5*x^60 + 10*x^30 + 1)* (x^120 + 28*x^90 + 134*x^60+ 92*x^30 +1) This happens on Maxima 5.9.2 on AMD64 using Clisp and on 5.9.1 using gcl (both AMD64 and i386) ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=1384806&group_id=4933 ```
 [Maxima-bugs] [ maxima-Bugs-1384806 ] factor((x^15+1)^15-(x^15-1)^15) wrong From: SourceForge.net - 2008-05-25 20:14:18 ```Bugs item #1384806, was opened at 2005-12-18 20:51 Message generated for change (Comment added) made by dgildea You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=1384806&group_id=4933 Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: None Group: None >Status: Closed >Resolution: Fixed Priority: 5 Private: No Submitted By: Waldek Hebisch (hebisch) Assigned to: Nobody/Anonymous (nobody) Summary: factor((x^15+1)^15-(x^15-1)^15) wrong Initial Comment: factor((x^15+1)^15-(x^15-1)^15) gives: 30 180 150 120 2 (3 x + 1) (5 x + 150 x + 951 x 90 60 30 + 1828 x + 1059 x + 102 x + 1) However, the second factor is composite, it is (5*x^60 + 10*x^30 + 1)* (x^120 + 28*x^90 + 134*x^60+ 92*x^30 +1) This happens on Maxima 5.9.2 on AMD64 using Clisp and on 5.9.1 using gcl (both AMD64 and i386) ---------------------------------------------------------------------- >Comment By: Dan Gildea (dgildea) Date: 2008-05-25 16:14 Message: Logged In: YES user_id=1797506 Originator: NO fixed in src/factor.lisp rev 1.17 o nprod: loop structure: was returning after finding factor when no tuples left, rather than continuing to next stage/tloop. (%i21) factor((x^15+1)^15-(x^15-1)^15) ; (%o21) 2*(3*x^30+1)*(5*x^60+10*x^30+1)*(x^120+28*x^90+134*x^60+92*x^30+1) ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=1384806&group_id=4933 ```