is 2 1934563 - 1
has 582362 decimal digits
takes 0.105 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L9BAA5FC3A3BD5924double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26830.810569.1176 %80000003200000001.96659.7461 %32.777072.1275 %
Target2620.317666.1290 %80004500000.00251.1511 %0.320166.5189 %
Difference+6+30.4929+2.9886 %+7992000+319550000+1.9639+8.5950%+32.4569+5.6085 %

Known prime factors (1 factor, 73.2 bits, 0.00378508% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1934563110362293109860607506712373.2252852383021640045
5 × 570476604328009
2020-01-015570476604328009988.772,444,9204,566,430

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2012-01-26markrtiny275000600000012--0.0466.540%
2015-10-17Bruno Victal5820K.ECM5000001500000012--0.1018.155%
2016-12-14JossManual testing568903568903---3.718%
2016-12-17JossManual testing682683682683---3.962%
2016-12-23JossManual testing819219819219---4.213%
2017-01-04JossManual testing983062983062---4.472%
2017-01-21JossManual testing11796741179674---4.738%
2017-04-05JossManual testing14156081415608012--0.1668.668%
2018-01-28mikrS068800000032000000012--1.96614.764%
2018-03-31JossManual testing193456319345630012---12.980%


Trial Factoring results:
575859606162636465666768
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1998-12-21ANONYMOUSv4_computers212580.020
2016-02-23Mark RoseManual testing2582600.060
2010-02-03S485122USB-W2602610.079
2016-02-23Mark RoseManual testing2612620.159
2011-08-27GrunwalderGIMPManual testing212630.825
2016-02-23Mark RoseManual testing2622630.507
2015-05-14lycornManual testing2632641.015
2015-05-14lycornManual testing2642651.931
2015-09-04ramgeisManual testing2652663.863
2018-01-22TJAOIManual testing2662677.726
2019-05-10chuenkitManual testing26726815.45


ECM factoring results:
Total ECM effort:39.779 GHz-days
Estimated T-Level:25.709
DigitsB1CompleteFacMiss
201100014.8500.000%
25500001.68518.540%
302500000.14286.778%
3510000000.01099.037%


ECM Summary

B1B2factorcurvesGHz-days
500005000000634.271
50000500000020.139
50000750000018615.53
250000400000004619.84


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-03-15ANONYMOUSv4_computers9BAA5FC3A3BD59240.105
1999-03-26ANONYMOUSv4_computers9BAA5FC3A3BD59240.105
1999-04-02ANONYMOUSv4_computers9BAA5FC3A3BD59240.105
1999-04-13ANONYMOUSv4_computers9BAA5FC3A3BD59240.105
1999-04-23ANONYMOUSv4_computers9BAA5FC3A3BD59240.105
1999-05-02ANONYMOUSv4_computers9BAA5FC3A3BD59240.105
1999-05-09ANONYMOUSv4_computers9BAA5FC3A3BD59240.105
1999-05-16ANONYMOUSv4_computers9BAA5FC3A3BD59240.105
1999-05-23ANONYMOUSv4_computers9BAA5FC3A3BD59240.105
1999-05-30ANONYMOUSv4_computers9BAA5FC3A3BD59240.105
2015-06-29MadPooManual testing9BAA5FC3A3BD59240.105


PRP results:
dateuseridcompidcofactorsres64
2020-01-01mrhx
11036229310986060750671
D7CF67C26CB4D83F
2020-01-04Alvin BunkBADCAT
11036229310986060750671
D7CF67C26CB4D83F


CERT results:
No CERT results for M1934563


P-1 factor-bounds graph:
B1 = 8000000, B2 = 320000000 (P-1 stage 2)
B1 = 1934563, B2 = 193456300 (P-1 stage 2)
B1 = 8000000 (P-1 stage 1)
B1 = 1415608, B2 = 14156080 (P-1 stage 2)
B1 = 1934563 (P-1 stage 1)
B1 = 1415608 (P-1 stage 1)
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 1179674 (P-1 stage 1)
B1 = 983062 (P-1 stage 1)
B1 = 819219 (P-1 stage 1)
B1 = 682683 (P-1 stage 1)
B1 = 275000, B2 = 6000000 (P-1 stage 2)
B1 = 568903 (P-1 stage 1)
B1 = 500000 (P-1 stage 1)
B1 = 275000 (P-1 stage 1)
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TF factor-bounds graph:
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this exponent TF target: 62
TF double-checked to: 67
ECM T-Level=25.71 ~= 69-bit
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Last modified: 2024-02-29T14:28:04+00:00