is 2 9293941 - 1
has 2797756 decimal digits
takes 2.569 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LDA243ED646234929double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2673.197164.1791%17500038062500.14944.1477%3.346565.6648%1.4857%
PrimeNet2640.383062.5000%4000011000000.03923.4887%0.422163.8083%1.3083%
GPU722686.413364.7059%6000014000000.05332.4554%6.466665.5725%0.8666%
Difference-1-3.2162-0.5268%+115000+2406250+0.0961+1.6923%-3.1201+0.0923%+0.0923%

Known prime factors (1 factor, 88.3 bits, 0.00094962% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
92939413697749738501916999155346092788.25719893335553248707944
23 × 33 × 67 × 1374608592678877
2014-07-086713746085926788778,444,15430,014,19756,058,161

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-04-10T00:00:00ANONYMOUSv4_computers40000290000---0.021--1.670%
2012-07-06T12:10:00Squeeky_SquirrelT7500_22001750003806250---0.149--4.148%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-03-01T00:00:00ANONYMOUSv4_computers21264--0.383--
2013-09-07T07:14:00NesowaManual testing264265--0.402--


ECM factoring results:

Old Calculation Method

Total ECM effort:1.261 GHz-days
Estimated T-Level:0.150
DigitsB1CurvesCompleteFacMiss
20110003 / 1000.03097.030%
25500003 / 2800.01198.932%

New Calculation Method

Total ECM effort:1.261 GHz-days
Estimated T-Level:0.150
DigitsB1CompleteFacMiss
20110000.11589.102%
25500000.01198.938%


ECM Summary

B1B2factorcurvesGHz-days
50000500000031.261


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2000-03-15T00:00:00davidcrossv4_computersDA243ED6462349292.569
2003-05-04T00:00:00ANONYMOUSv4_computersDA243ED6462349292.569


PRP results:
dateuseridcompidcofactorsres64PRP
2019-08-22T05:02:00mnd9libproj
369774973850191699915534609
CEDEAB91411B51__no
2020-11-11T12:42:01kutensspica-b
369774973850191699915534609
CEDEAB91411B5120no


P-1 factor-bounds graph:
B1 = 175000, B2 = 3806250 (P-1 stage 2)
B1 = 175000 (P-1 stage 1)
B1 = 40000, B2 = 290000 (P-1 stage 2)
B1 = 40000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2020-11-11T12:42:01+00:00