is 2 8014793 - 1
has 2412694 decimal digits
takes 2.093 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L3F952BEB0EB987C8double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26914.895866.6667 %500000160000000.50905.0538 %15.404868.3513 %
Target2673.707465.6716 %5500060000000.14352.5676 %3.850866.5531 %
Difference+2+11.1884+0.9950 %+445000+10000000+0.3656+2.4862%+11.5540+1.7982 %

Known prime factors (1 factor, 71.4 bits, 0.00089059% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
801479330700641105978198023592271.379191524853517603
3 × 31 × 282847 × 7280993
2020-11-14282847728099388.3620.25140.2805

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2002-07-06ANONYMOUSv4_computers45000663750--0.0302.119%
2004-08-20ANONYMOUSv4_computers45000663750--0.0302.119%
2012-09-24NesowaEPC10000019500006--0.0763.220%
2020-04-10Dylan Delgadocolab24500046550006--0.1844.436%
2020-11-14Dylan DelgadoManual testing500000160000001222271.3790.5096.110%


Trial Factoring results:
57585960616263646566676869
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1998-08-24ANONYMOUSv4_computers212630.122
2013-09-09AxelssonManual testing2632640.245
2013-12-23David CampeauManual testing2642650.466
2015-04-21snme2pm1Manual testing2652660.932
2015-11-16snme2pm1Manual testing2662671.865
2017-09-06Sid & AndyManual testing2672683.729
2020-02-21TJAOIManual testing2682697.459


ECM factoring results:
Total ECM effort:2.382 GHz-days
Estimated T-Level:1.154
DigitsB1CompleteFacMiss
20110000.23179.392%
25500000.02197.887%
302500000.00199.865%


ECM Summary

B1B2factorcurvesGHz-days
50000500000062.382


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-08-31kraDenv4_computers3F952BEB0EB987C82.093
2002-07-20ANONYMOUSv4_computers3F952BEB0EB987C82.093
2004-08-20ANONYMOUSv4_computers3F952BEB0EB987C82.093
2016-08-21Vteammicael3F952BEB0EB987C82.093


PRP results:
dateuseridcompidcofactorsres64
2020-11-15Joe S.11600k
3070064110597819802359
BB3D082EE138B62F


CERT results:
dateuseridcompid
2020-11-15Ben Deloi-0f80c39f3f5a3d954


P-1 factor-bounds graph:
B1 = 500000, B2 = 16000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
B1 = 245000, B2 = 4655000 (P-1 stage 2)
B1 = 245000 (P-1 stage 1)
B1 = 100000, B2 = 1950000 (P-1 stage 2)
B1 = 100000 (P-1 stage 1)
B1 = 45000, B2 = 663750 (P-1 stage 2)
B1 = 45000 (P-1 stage 1)
103
104
105
106
103
104
105
106
107
108
TF factor-bounds graph:
269
268
267
266
265
264
263
this exponent TF target: 67
TF double-checked to: 67
ECM T-Level=1.15 ~= -13-bit
250
260
270
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Last modified: 2024-03-13T02:15:48+00:00