is 2 2935019 - 1
has 883529 decimal digits
takes 0.250 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LDCFFE470FD490368double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26940.676768.1159%1000000019223759100130.423214.9444%171.099872.8808%4.7649%
PrimeNet2590.026262.7119%130002600000.00333.0708%0.029463.8569%1.1451%
GPU722630.543865.0794%170003000000.00401.9458%0.547865.7588%0.6795%
Difference+6+40.1329+3.0366%+9983000+19223459100+130.4192+12.9987%+170.5520+7.1220%+4.0854%

Known prime factors (1 factor, 129.7 bits, 0.00441931% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
2935019111145731445314656329208758939069782657740129.708189344142994158907198230674041752
23 × 3 × 13 × 53 × 139627 × 8601097 × 8709373 × 1094740711
2022-11-02870937310947407115.459e+108.377113.748

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-12-13T00:00:00ANONYMOUSv4_computers2048204800---0.002--0.198%
2010-11-08T22:49:00markrtiny1050002283750---0.028--2.295%
2015-04-29T15:00:00VictordeHollanderManual testing100000020000000---0.251--5.053%
2022-09-05T11:25:43Wentao HuangBiolake12000003268104840---22.11--10.470%
2022-11-02T22:19:03mikrMSI100000001922375910040129.708130.40.500260.814.944%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-02-08T00:00:00ANONYMOUSv4_computers21259--0.026--
2016-02-23T16:29:25Mark RoseManual testing259260--0.026--
2009-02-14T03:50:00Sturle Sundegolli.ifi260261--0.052--
2012-01-03T11:26:00markroldgamer261262--0.105--
2013-01-07T13:49:00dbaughManual testing262263--0.334--
2015-04-25T17:16:00VictordeHollanderManual testing263264--0.669--
2015-04-25T17:16:00VictordeHollanderManual testing264265--1.273--
2016-02-23T09:49:06ramgeisManual testing265266--2.546--
2017-11-23T20:18:51Gordon SpenceManual testing266267--5.092--
2018-12-21T08:04:33chuenkitManual testing267268--10.18--
2021-05-24T11:36:36TJAOIManual testing268269--20.37--


ECM factoring results:
Total ECM effort:14.535 GHz-days
Estimated T-Level:22.214
DigitsB1CompleteFacMiss
20110004.7860.834%
25500000.44364.228%
302500000.02897.242%
3510000000.00199.869%


ECM Summary

B1B2factorcurvesGHz-days
50000500000010211.80
50000629666970.902
50000645000070.913
50000655000070.920


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-06-01T00:00:00ANONYMOUSv4_computersDCFFE470FD4903680.250
1999-05-02T00:00:00foxkidv4_computersDCFFE470FD4903680.250
2018-10-08T21:42:28kkmrkkblmbrbkoldDCFFE470FD4903680.250


PRP results:
dateuseridcompidcofactorsres64PRP
2022-11-08T02:25:47Kevin_9611PRP-CF
1111457314453146563292087589390697826577
DBBD66A0610447DBno
2022-11-08T03:15:22LordJuliusWhiteBox
1111457314453146563292087589390697826577
DBBD66A0610447DBno


P-1 factor-bounds graph:
B1 = 10000000, B2 = 19223759100 (P-1 stage 2)
B1 = 1200000, B2 = 3268104840 (P-1 stage 2)
B1 = 10000000 (P-1 stage 1)
B1 = 1000000, B2 = 20000000 (P-1 stage 2)
B1 = 1200000 (P-1 stage 1)
B1 = 1000000 (P-1 stage 1)
B1 = 105000, B2 = 2283750 (P-1 stage 2)
B1 = 105000 (P-1 stage 1)
B1 = 2048, B2 = 204800 (P-1 stage 2)
B1 = 2048 (P-1 stage 1)
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TF factor-bounds graph:
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266
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Last modified: 2022-11-08T03:15:22+00:00