is 2 389531 - 1
has 117261 decimal digits
takes 0.004 GHz-days to do one PRP test
Last-known PrimeNet details:
-unknown- L-L tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26776.281371.6418%----76.281371.6418%19.1418%
PrimeNet2400.000052.5000%40001200000.000117.2445%0.000169.7445%17.2445%
GPU722440.000056.8182%70002000000.000212.8018%0.000369.6199%12.8018%
Difference+23+76.2813+14.8236%-7000-200000-0.0002-12.8018%+76.2810+2.0219%+2.0219%

Known prime factors (4 factors, 167.1 bits, 0.04290690% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
389531779063619.5711
1
-111.793e-131.406e-82.861e-8
389531497851780491135.53563904
25 × 1997
2008-07-213219972.153e-81.955e-62.859e-6
389531400421147210431371755.15251397853728
25 × 132 × 163 × 199 × 293
2014-11-071992930.01932.869e-65.693e-6
3895311323295403003108871856.877169857521353
13 × 73 × 79 × 2265643
2014-11-077922656430.03110.00170.0032

11 Composite Factors:
exponentprime factorscomposite factordigitsbits*
389531387857901663880871755.106
389531311953300209200294406312374.724
3895311030930486549811005588812476.448
38953119935038108456165425544997132890.687
38953165880497249932984393481194632892.412
389531155306505938881856049213620990891934110.259
389531513250578290245406205386399320316934111.983
389531529875463368794962859920203773251934112.029
389531412806368118483510150538013712200944969740131.601
38953126379944287611834576555469590783707465227543145147.564
38953120551638536539738680715033805804727488982565410115
3
51167.136
P-1 results:
Exponent "389531" not found


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-07-21T09:18:00J FeitsmaManual testing??35.535119.77716e-90.0082.03513e-8


ECM factoring results:
Total ECM effort:10.435 GHz-days
Estimated T-Level:26.125
DigitsB1CurvesCompleteFacMiss
2011000416 / 1004.1601.528%
2550000416 / 2801.48622.574%
30250000144 / 6400.22579.838%

ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0
10.00000e+0
5000050000002722.861
250000250000001447.574


Lucas-Lehmer results:
Exponent "389531" not found


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-23T07:10:13Oliver KruseOllaptop0857043127E395__?
2017-09-23T17:12:54Oliver KruseManual testing0857043127E395__?
2017-10-13T06:07:52Oliver KruseThreadripper0857043127E395__no
2017-12-15T22:43:39ATHxps
779063
49785178049
40042114721043137
132329540300310887
0857043127E395__no
2020-04-18T15:28:58Oliver KruseAddPrpType5
779063
49785178049
40042114721043137
132329540300310887
EBDD0E8E87B908__no


P-1 factor-bounds graph:
100
101
102
103
100
101
102
103
104
105
106
107
TF factor-bounds graph:
267
2
210
220
230
240
250
260
270
280
290
2100
Last modified: 2021-01-15T10:42:32+00:00