New factors on F12 or bug

jocelynl · 2004-10-31, 02:13

I started using Fermatbeta4.4.exe from Leonid Durman on F12 and it found two unreported factors so my first assumption was that there's a bug in the beta version. So I downloaded Fermat.exe and ran it again with same results. It find 182126139*2^14+1 and 446369595*2^14+1 both to be factors of F12
Can anyone run tests on these with others software

Joss

rogue · 2004-10-31, 02:33

Sorry, but

182126139*2^14+1 = (397*2^16+1)*(7*2^14+1)
446369595*2^14+1 = (973*2^16+1)*(7*2^14+1)

jocelynl · 2004-10-31, 02:55

So I guess the program is ok but reports composite factors as well.
I'll be carefull next time.

Joss

2004-10-31, 02:13	#1
jocelynl Sep 2002 262₁₀ Posts	New factors on F12 or bug I started using Fermatbeta4.4.exe from Leonid Durman on F12 and it found two unreported factors so my first assumption was that there's a bug in the beta version. So I downloaded Fermat.exe and ran it again with same results. It find 1821261392^14+1 and 4463695952^14+1 both to be factors of F12 Can anyone run tests on these with others software Joss Last fiddled with by jocelynl on 2004-10-31 at 02:14

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2004-10-31, 02:33	#2
rogue "Mark" Apr 2003 Between here and the 3³·277 Posts	Sorry, but 1821261392^14+1 = (3972^16+1)(72^14+1) 4463695952^14+1 = (9732^16+1)(72^14+1)

2004-10-31, 02:55	#3
jocelynl Sep 2002 406₈ Posts	So I guess the program is ok but reports composite factors as well. I'll be carefull next time. Joss