is 2 6942329 - 1
has 2089850 decimal digits
takes 1.514 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LB03F70A363FCEFBBdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual272137.754068.0556 %40000004568186709.06528.0806 %146.819270.6369 %
Target2674.280165.6716 %4500045000000.09102.2375 %4.371166.4397 %
Difference+5+133.4739+2.3839 %+3955000+452318670+8.9742+5.8431%+142.4481+4.1971 %

Known prime factors:
No known factors for M6942329

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2002-03-03ANONYMOUSv4_computers35000463750--0.0181.770%
2012-08-19NesowaEPC8500015087506--0.0512.886%
2018-03-16Squeeky_Squirreli5-5250U_16004050001235250012--0.3345.600%
2021-11-07Seth_TrManual testing20000005800000012--1.5978.432%
2021-12-02Seth_TrManual testing4000000456818670--10.8611.734%


Trial Factoring results:
57585960616263646566676869707172
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1998-07-05ANONYMOUSv4_computers212620.044
2005-03-06David Campeauv4_computers212630.141
2014-02-09NesowaManual testing2632640.283
2014-02-16lycornManual testing2642650.538
2015-06-26VictordeHollanderManual testing2652661.076
2016-04-05Gordon SpenceManual testing2662672.153
2018-05-23ramgeisManual testing2672684.306
2020-04-24TJAOIManual testing2682698.611
2021-07-28takahashiManual testing26927017.22
2021-08-12SRBaseManual testing27027134.44
2021-10-15SRBaseManual testing27127268.89


ECM factoring results:
Total ECM effort:1.989 GHz-days
Estimated T-Level:1.154
DigitsB1CompleteFacMiss
20110000.23179.392%
25500000.02197.887%
302500000.00199.865%


ECM Summary

B1B2factorcurvesGHz-days
50000500000061.989


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-03-01ANONYMOUSv4_computersD3CDF9BBB8CB66941.514
1999-10-07ANONYMOUSv4_computersB03F70A363FCEFBB1.514
2002-04-14ANONYMOUSv4_computersB03F70A363FCEFBB1.514


PRP results:
No PRP results for M6942329


CERT results:
No CERT results for M6942329


P-1 factor-bounds graph:
B1 = 4000000, B2 = 456818670 (P-1 stage 2)
B1 = 2000000, B2 = 58000000 (P-1 stage 2)
B1 = 4000000 (P-1 stage 1)
B1 = 2000000 (P-1 stage 1)
B1 = 405000, B2 = 12352500 (P-1 stage 2)
B1 = 405000 (P-1 stage 1)
B1 = 85000, B2 = 1508750 (P-1 stage 2)
B1 = 85000 (P-1 stage 1)
B1 = 35000, B2 = 463750 (P-1 stage 2)
B1 = 35000 (P-1 stage 1)
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109
TF factor-bounds graph:
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270
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268
267
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265
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262
this exponent TF target: 67
TF double-checked to: 67
ECM T-Level=1.15 ~= -13-bit
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Last modified: 2024-03-13T02:15:48+00:00