a b/c bug + ifactor bug - Printable Version +- HP Forums (https://www.hpmuseum.org/forum) +-- Forum: HP Calculators (and very old HP Computers) (/forum-3.html) +--- Forum: HP Prime (/forum-5.html) +--- Thread: a b/c bug + ifactor bug (/thread-403.html) a b/c bug + ifactor bug - Peter Van Roy - 01-11-2014 03:09 PM Hello, I am new to this list, but I am an enthusiastic HP Prime user and I hope that they iron out all the early problems. I found two problems: 1. In Home mode, enter: 1.2+0i Then press a b/c -> this cycles between 1.2, 6/5, and 1+(1+i)/5. Type or conversion problem between complex and real? 2. In CAS mode, start by entering: ifactor(2ˆ101+1003). Then enter: ifactor((2ˆ101+1001)*(largest factor of 2ˆ101+1003)) where "(largest factor of 2ˆ101+1003)" is replaced by its meaning. This returns a strange result: -1*-177509...24691 The latter is the value of (2ˆ101+1001)*(largest factor of 2ˆ1001+1003). Peter RE: a b/c bug + ifactor bug - Thomas Klemm - 01-11-2014 04:40 PM (01-11-2014 03:09 PM)Peter Van Roy Wrote:  This returns a strange result: -1*-177509...24691 The latter is the value of (2ˆ101+1001)*(largest factor of 2ˆ1001+1003). Not a bug. Works as designed by NSA. You're not allowed to factor numbers that are too big. What are you trying to accomplish by the way? Cheers Thomas RE: a b/c bug + ifactor bug - Helge Gabert - 01-11-2014 06:30 PM RE: a b/c: definitely a "display" bug. If you grab the erroneous expression from the history line, it becomes 1+1/5 and the "i" disappears. RE: a b/c bug + ifactor bug - Helge Gabert - 01-11-2014 07:05 PM Re: ifactor Yep, also a problem - - same with ifactors(your large composite) returns [-1 1 -177 . . . 1] The factor -1 seems to occur with integers greater than 10^32.