is 2 49408369 - 1
has 14873402 decimal digits
takes 90.513 GHz-days to do one PRP test
Last-known PrimeNet details:
0 L-L tests remaining
ResidueStatus
L-L6F2253D5EC86C86Adouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual276309.745065.7895%595000203787504.44373.4259%314.188769.2154%6.8966%
PrimeNet2692.416362.3188%22000090000001.85515.1241%4.271467.4429%5.1241%
GPU7227338.715064.3836%320000100000002.25093.6771%40.965968.0607%3.6771%
Difference+3+271.0300+1.4059%+275000+10378750+2.1927-0.2512%+273.2227+1.1547%+1.1547%

Known prime factors:
No known factors for M49,408,369

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2009-02-15T18:55:00Sturle Sundesimon.ifi59500020378750---4.444--3.426%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2003-11-28T00:00:00Team Prime Ribv4_computers?259--0.001--
2007-08-14T00:00:001997rj7v4_computers?263--0.020--
2008-06-03T14:50:00ANONYMOUSManual testing?264--0.040--
2009-02-07T01:26:00cawgodcawgod1264265--0.076--
2009-02-08T12:38:00cawgodcawgod1265266--0.151--
2009-02-09T19:07:00sasaki3value1991266267--0.302--
2009-05-15T02:21:00Kent Rogersfenway267268--0.605--
2009-05-18T01:01:002knarfChipzilla268269--1.210--
2015-08-26T06:27:00Sid & AndyManual testing269270--2.420--
2015-12-23T20:52:26AirSquirrelsManual testing270271--4.840--
2015-12-23T20:52:26AirSquirrelsManual testing271272--9.68--
2017-09-14T20:45:07Sid & AndyManual testing272273--19.36--
2019-09-13T21:34:12Jon PaceManual testing273274--38.72--
2020-12-21T10:32:15-Anonymous-Manual testing274275--77.44--
2020-12-23T01:26:11-Anonymous-Manual testing275276--154.9--


ECM factoring results:
Exponent "49408369" not found


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2010-08-21T10:38:00KiiminkiHome-main_computer6F2253D5EC86C86A90.51
2018-09-10T19:22:33Dax MickelsonGPO-RTP-mprime1106F2253D5EC86C86A90.51


PRP results:
Exponent "49408369" not found


P-1 factor-bounds graph:
B1 = 595000, B2 = 20378750 (stage 2)
B1 = 595000 (stage 1)
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108
TF factor-bounds graph:
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273
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259
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Last modified: 2020-12-23T01:26:11+00:00