is 2 4664801 - 1
has 1404246 decimal digits
takes 0.614 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L70AB9FA093531088double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual272205.010668.0556%1988203616343031.00005.3401%206.010669.7614%1.7059%
PrimeNet2610.065962.2951%200004000000.00783.1180%0.073663.4707%1.1756%
GPU722651.564064.6154%300006000000.01172.2298%1.575665.4044%0.7890%
Difference+7+203.4466+3.4402%+1958203+61034303+0.9883+3.1103%+204.4350+4.3570%+4.3570%

Known prime factors:
No known factors for M4664801

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2009-09-04T03:14:00Carsten Kossendeydurandal25000375000---0.008--0.680%
2012-02-16T21:02:00Squeeky_SquirrelT7500_22001100002090000---0.042--1.695%
2018-02-12T01:36:30Ismo Laitela6600K19882036163430312---1.000--5.340%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2002-08-31T00:00:00ANONYMOUSv4_computers21261--0.066--
2010-07-14T00:13:00markrut261262--0.066--
2011-12-11T21:16:00GrunwalderGIMPManual testing21263--0.342--
2016-02-23T16:38:57Mark RoseManual testing262263--0.210--
2015-02-09T23:52:00JayderManual testing263264--0.421--
2015-02-10T19:36:00monstManual testing264265--0.801--
2015-07-08T21:07:00snme2pm1Manual testing265266--1.602--
2018-07-16T22:10:55BloodERazorManual testing266267--3.204--
2018-10-18T01:15:15chuenkitManual testing267268--6.408--
2021-03-20T23:56:30-Anonymous-Manual testing268269--12.82--
2021-03-20T23:56:30-Anonymous-Manual testing269270--25.63--
2021-03-20T23:56:30-Anonymous-Manual testing270271--51.26--
2021-03-23T12:16:11-Anonymous-Manual testing271272--102.5--


ECM factoring results:

Old Calculation Method

Total ECM effort:1.771 GHz-days
Estimated T-Level:0.450
DigitsB1CurvesCompleteFacMiss
20110009 / 1000.09091.352%
25500009 / 2800.03296.831%

New Calculation Method

Total ECM effort:1.771 GHz-days
Estimated T-Level:0.450
DigitsB1CompleteFacMiss
20110000.34670.740%
25500000.03296.848%
302500000.00299.798%


ECM Summary

B1B2factorcurvesGHz-days
50000500000091.771


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-06-01T00:00:00ANONYMOUSv4_computers70AB9FA0935310880.614


PRP results:
No PRP results for M4664801


P-1 factor-bounds graph:
B1 = 1988203, B2 = 61634303 (P-1 stage 2)
B1 = 1988203 (P-1 stage 1)
B1 = 110000, B2 = 2090000 (P-1 stage 2)
B1 = 110000 (P-1 stage 1)
B1 = 25000, B2 = 375000 (P-1 stage 2)
B1 = 25000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2021-03-23T12:16:11+00:00