is 2 64148107 - 1
has 19310505 decimal digits
takes 155.604 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
1 primality tests remaining
ResidueStatus
L-LD32512C2FCBC4B__
needs double-check
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27459.641164.8649%575000115000004.11603.8274%63.757166.2096%1.3447%
PrimeNet2703.725062.8571%280000120000003.23075.2151%6.955764.7942%1.9370%
GPU7227459.641164.8649%400000140000004.01313.7920%63.654266.1972%1.3323%
Difference---+175000-2500000+0.1029+0.0353%+0.1029+0.0124%+0.0124%

Known prime factors:
No known factors for M64148107

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2013-10-27T11:11:00TheJudgerManual testing57500011500000---4.116--3.827%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-11-17T00:00:00ANONYMOUSv4_computers21250--2.33819e-6--
2003-08-25T00:00:00ANONYMOUSv4_computers21259--0.001--
2004-01-18T00:00:00AxelFoxv4_computers21260--0.002--
2016-02-23T17:19:06Mark RoseManual testing260263--0.022--
2009-03-06T21:08:00Team_Elteor_Borislavj~ElteorH2263264--0.031--
2009-03-15T10:27:00bladerunnerNebuchadnezzar264265--0.058--
2009-03-17T03:39:00fes016X3210265266--0.116--
2009-03-18T07:19:00ANONYMOUSnode1266267--0.233--
2009-10-26T07:44:00davy000d267268--0.466--
2009-11-16T12:05:00davy000d268269--0.932--
2012-01-23T05:34:00america64Manual testing269270--1.864--
2012-08-01T20:43:00ANONYMOUS270271--3.728--
2013-09-04T12:47:00AllRandomManual testing271272--7.455--
2013-09-29T12:53:00Brian LenhartManual testing272273--14.91--
2013-10-17T22:42:00Jerry HallettManual testing273274--29.82--


ECM factoring results:
No ECM results for M64148107


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2014-10-09T23:24:00curtischum115--18lD32512C2FCBC4B__155.6


PRP results:
No PRP results for M64148107


P-1 factor-bounds graph:
B1 = 575000, B2 = 11500000 (P-1 stage 2)
B1 = 575000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2016-02-23T17:19:06+00:00