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Old 2016-11-07, 17:34   #38
Batalov
 
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"Serge"
Mar 2008
Phi(4,2^7658614+1)/2

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Because I had not found any GFN7s just yet (while with much less work I'd found 3 GFN11s), I had of course built an extensive unit test. All of these find the expected factors just fine:
Code:
FermatFactor=25,620719e9,620720e9
FermatFactor=32,951e9,952e9
FermatFactor=44,205953e6,205954e6
FermatFactor=45,50766e6,50767e6
FermatFactor=46,580e6,581e6
FermatFactor=49,3867e6,3868e6
FermatFactor=52,30e6,31e6
FermatFactor=61,458e6,459e6
FermatFactor=66,63975e6,63976e6
FermatFactor=68,19250e6,19251e6
#FermatFactor=82,97,98 #--finds the factor but then stops
FermatFactor=91,22066e6,22067e6
FermatFactor=93,933772e6,933773e6
FermatFactor=96,135404e6,135405e6
FermatFactor=102,250e6,251e6
FermatFactor=106,26949e6,26950e6
FermatFactor=110,3e5,4e5
FermatFactor=121,18e6,19e6
FermatFactor=141,51e6,52e6
FermatFactor=144,92500e6,92501e6
FermatFactor=148,94283e6,94284e6
FermatFactor=152,10139e6,10140e6
FermatFactor=167,14375e6,14376e6
FermatFactor=180,224e6,225e6
FermatFactor=181,1160e6,1161e6
FermatFactor=217,71600,71800

Last fiddled with by Batalov on 2016-11-12 at 17:05
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