is 2 1157591 - 1
has 348470 decimal digits
takes 0.034 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LC1DED3D83303A4C2double-checked
PRPF8B0DFC68904F879PRP-tested

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual269103.133869.5652 %1500000052081146810122.556115.6355 %225.689974.3238 %
Target2600.132765.0000 %50001300000.00050.7720 %0.133265.2702 %
Difference+9+103.0012+4.5652 %+14995000+52081016810+122.5556+14.8635%+225.5567+9.0536 %

Known prime factors:
No known factors for M1157591

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2002-03-16Jossv4_computers10001000--4.30000e-50.039%
2002-06-02ANONYMOUSv4_computers500001000000--0.0044.181%
2012-02-04markrtiny5000001000000012--0.0478.612%
2016-02-28JossManual testing29094125236941612--0.24112.345%
2017-10-23mikrColor1500000050000000012--1.78017.334%
2023-01-17JossManual testing29294122099541990--6.48618.692%
2023-02-15JossManual testing29294125835634350--17.7620.351%
2023-06-26JossJoss292941226982315360--81.5422.759%
2023-12-10mikrMSI1500000052081146810--157.925.746%


Trial Factoring results:
57585960616263646566676869
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2001-11-10ANONYMOUSv4_computers212570.017
2003-05-04ANONYMOUSv4_computers212580.033
2016-02-23Mark RoseManual testing2582600.100
2009-02-15Sturle Sundeginy.ifi2602610.133
2011-05-09XyzzyManual testing2612620.265
2012-10-11dbaughManual testing2622630.848
2014-12-28Matthias WurtingerManual testing2632641.696
2014-12-30lycornManual testing2642653.228
2015-08-28omylistManual testing2652666.455
2018-08-15YxinityManual testing26626712.91
2020-02-29Gordon SpenceManual testing26726825.82
2021-09-21MadPooManual testing26826951.64


ECM factoring results:
Total ECM effort:17.660 GHz-days
Estimated T-Level:25.658
DigitsB1CompleteFacMiss
201100014.8080.000%
25500001.62019.795%
302500000.13287.678%
3510000000.00999.129%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002819.86
25000025000000447.799


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2015-11-11MadPooManual testingC1DED3D83303A4C20.034


PRP results:
dateuseridcompidcofactorsres64
2020-11-05Ethan O'ConnorHighland2020F8B0DFC68904F879


CERT results:
dateuseridcompid
2020-11-05Simon Josefssoncto11


P-1 factor-bounds graph:
B1 = 15000000, B2 = 52081146810 (P-1 stage 2)
B1 = 2929412, B2 = 26982315360 (P-1 stage 2)
B1 = 2929412, B2 = 5835634350 (P-1 stage 2)
B1 = 2929412, B2 = 2099541990 (P-1 stage 2)
B1 = 15000000, B2 = 500000000 (P-1 stage 2)
B1 = 15000000 (P-1 stage 1)
B1 = 2909412, B2 = 52369416 (P-1 stage 2)
B1 = 2929412 (P-1 stage 1)
B1 = 2909412 (P-1 stage 1)
B1 = 500000, B2 = 10000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
B1 = 50000, B2 = 1000000 (P-1 stage 2)
B1 = 50000 (P-1 stage 1)
B1 = 1000 (P-1 stage 1)
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TF factor-bounds graph:
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this exponent TF target: 60
TF double-checked to: 67
ECM T-Level=25.66 ~= 69-bit
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Last modified: 2024-03-13T02:15:48+00:00