is 2 3578359 - 1
has 1077194 decimal digits
takes 0.376 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LB859E55D53391AF7double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual272267.254869.4444 %1000001303648501.09613.4906 %268.350970.5110 %
Target2640.994765.6250 %2000020000000.01951.9783 %1.014266.3050 %
Difference+8+266.2601+3.8194 %+80000+128364850+1.0766+1.5123%+267.3367+4.2060 %

Known prime factors (1 factor, 86.6 bits, 0.00242001% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
35783591169956732349189370706796332786.59716347671269836108824
23 × 37 × 55228619154851719
2021-06-2937552286191548517196,866,925458,242,592855,869,550

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2009-07-09Carsten Kossendeymother20000245000--0.0051.726%
2011-12-25Squeeky_SquirrelP4_26008500015725006--0.0253.743%
2016-04-13JossManual testing17000043319616--0.0605.125%
2017-04-18JossManual testing34000034000006--0.0775.260%
2022-03-01JossManual testing100000100000--0.0151.530%
2022-05-24JossManual testing100000130364850--1.3028.072%


Trial Factoring results:
57585960616263646566676869707172
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2016-02-23Mark RoseManual testing212600.043
2009-03-14S485122USB-A2602610.043
2011-06-15markroldgamer2612620.086
2012-07-02GrunwalderGIMPManual testing212630.446
2016-02-23Mark RoseManual testing2622630.274
2015-01-30VictordeHollanderManual testing2632651.593
2016-02-26ramgeisManual testing2652662.088
2017-01-20Gordon SpenceManual testing2662674.177
2018-10-29TJAOIManual testing2672688.353
2020-12-22axnManual testing26826916.71
2021-03-17ANONYMOUSManual testing269271100.2
2021-03-20ANONYMOUSManual testing271272133.7


ECM factoring results:
Total ECM effort:2.936 GHz-days
Estimated T-Level:4.038
DigitsB1CompleteFacMiss
20110000.80844.589%
25500000.07492.840%
302500000.00599.533%


ECM Summary

B1B2factorcurvesGHz-days
50000470000071.008
500005000000121.632
50000500000020.296


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-07-26ANONYMOUSv4_computersB859E55D53391AF70.376


PRP results:
dateuseridcompidcofactorsres64
2021-06-30kutensspica
116995673234918937070679633
B792DC66C9C905CB


CERT results:
dateuseridcompid
2021-06-30yooper


P-1 factor-bounds graph:
B1 = 100000, B2 = 130364850 (P-1 stage 2)
B1 = 340000, B2 = 3400000 (P-1 stage 2)
B1 = 170000, B2 = 4331961 (P-1 stage 2)
B1 = 340000 (P-1 stage 1)
B1 = 170000 (P-1 stage 1)
B1 = 85000, B2 = 1572500 (P-1 stage 2)
B1 = 100000 (P-1 stage 1)
B1 = 85000 (P-1 stage 1)
B1 = 20000, B2 = 245000 (P-1 stage 2)
B1 = 20000 (P-1 stage 1)
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TF factor-bounds graph:
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this exponent TF target: 64
TF double-checked to: 67
ECM T-Level=4.04 ~= -3-bit
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Last modified: 2024-03-13T02:15:48+00:00