is 2 1860829 - 1
has 560166 decimal digits
takes 0.101 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L90DAA694461CE40Adouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26832.031469.1176 %25798892046911901.06918.4099 %33.100571.7148 %
Target2610.165165.5738 %90007500000.00391.6329 %0.169066.1359 %
Difference+7+31.8663+3.5439 %+2570889+203941190+1.0653+6.7771%+32.9315+5.5789 %

Known prime factors (2 factors, 161.0 bits, 0.00864960% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
18608293124142149688146192457692478.04883944901699407796
22 × 101 × 28279 × 7347657631
2021-08-1328279734765763164,48531.49258.815
186082990646170967401805309673832582.9072435639464115235879
3 × 2377 × 341556508780709
2019-11-292377341556508780709530,8041,463,8262,734,019

1 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2012-01-05markrtiny275000600000012--0.0467.177%
2015-10-07Bruno Victal5820K.ECM5000001500000012--0.1018.881%
2016-09-13JossManual testing5000003000000012--0.1669.889%
2016-09-30JossManual testing500000330000006--0.17910.027%
2016-10-07JossManual testing500000396000006--0.20710.292%
2016-10-29JossManual testing600000600000---4.198%
2016-12-19JossManual testing720000720000---4.462%
2016-12-29JossManual testing864000864000---4.734%
2017-01-14JossManual testing10368001036800---5.013%
2017-02-11JossManual testing12441601244160012---9.119%
2017-03-22JossManual testing14929921492992012---9.498%
2017-03-28JossManual testing17915901791590012---9.881%
2017-04-01JossManual testing21499082149908012---10.266%
2017-05-22JossManual testing25798892579889012--0.30210.654%
2018-02-11JossManual testing25798895159778012--0.41311.863%
2018-02-26JossManual testing257988910319556012--0.63413.055%
2018-09-17JossManual testing257988918608290012--0.98914.055%
2018-10-25JossManual testing257988920469119012--1.06914.215%


Trial Factoring results:
575859606162636465666768
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2003-01-09ANONYMOUSv4_computers212580.021
2016-02-23Mark RoseManual testing2582600.062
2010-04-06Architects CubedManual testing2602610.083
2011-03-08GrunwalderGIMPManual testing212630.858
2016-02-23Mark RoseManual testing2612630.693
2015-05-07snme2pm1Manual testing2632653.063
2015-09-10ramgeisManual testing2652664.016
2018-05-14TJAOIManual testing2662678.032
2019-07-08TJAOIManual testing26726816.06


ECM factoring results:
Total ECM effort:39.142 GHz-days
Estimated T-Level:25.710
DigitsB1CompleteFacMiss
201100014.9790.000%
25500001.68118.623%
302500000.14286.758%
3510000000.01099.030%


ECM Summary

B1B2factorcurvesGHz-days
500005000000543.631
50000500000020.138
50000660000017913.97
500006600000161.249
250000400000004720.16


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-12-21ANONYMOUSv4_computers90DAA694461CE40A0.101
2015-07-16MadPooManual testing90DAA694461CE40A0.101


PRP results:
dateuseridcompidcofactorsres64
2019-11-30mnd9f4b
9064617096740180530967383
90086F6E14037E9C
2019-12-01marssystemssystem11
9064617096740180530967383
90086F6E14037E9C
2021-08-13SRJ2877LTOS
312414214968814619245769
9064617096740180530967383
90086F6E14037E9C


CERT results:
dateuseridcompid
2021-08-13rushynlinux


P-1 factor-bounds graph:
B1 = 2579889, B2 = 204691190 (P-1 stage 2)
B1 = 2579889, B2 = 186082900 (P-1 stage 2)
B1 = 2579889, B2 = 103195560 (P-1 stage 2)
B1 = 2579889, B2 = 51597780 (P-1 stage 2)
B1 = 2579889, B2 = 25798890 (P-1 stage 2)
B1 = 2149908, B2 = 21499080 (P-1 stage 2)
B1 = 1791590, B2 = 17915900 (P-1 stage 2)
B1 = 500000, B2 = 39600000 (P-1 stage 2)
B1 = 2579889 (P-1 stage 1)
B1 = 500000, B2 = 33000000 (P-1 stage 2)
B1 = 1492992, B2 = 14929920 (P-1 stage 2)
B1 = 2149908 (P-1 stage 1)
B1 = 500000, B2 = 30000000 (P-1 stage 2)
B1 = 1244160, B2 = 12441600 (P-1 stage 2)
B1 = 1791590 (P-1 stage 1)
B1 = 1492992 (P-1 stage 1)
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 1244160 (P-1 stage 1)
B1 = 1036800 (P-1 stage 1)
B1 = 864000 (P-1 stage 1)
B1 = 720000 (P-1 stage 1)
B1 = 600000 (P-1 stage 1)
B1 = 275000, B2 = 6000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
B1 = 275000 (P-1 stage 1)
102
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105
106
107
102
103
104
105
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109
1010
1011
1012
1013
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1015
TF factor-bounds graph:
268
267
266
265
263
261
260
258
this exponent TF target: 61
TF double-checked to: 67
ECM T-Level=25.71 ~= 69-bit
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Last modified: 2024-03-13T02:15:48+00:00