is 2 1306717 - 1
has 393362 decimal digits
takes 0.041 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L0DC22249379E9374double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26722.739468.6567 %1190000345100000.13816.2161 %22.877570.6050 %
Target2600.117565.0000 %55001800000.00070.9360 %0.118265.3276 %
Difference+7+22.6218+3.6567 %+1184500+34330000+0.1374+5.2800%+22.7593+5.2774 %

Known prime factors (1 factor, 93.5 bits, 0.00715370% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1306717137998405533660136118548127772993.4795280347831001668154564
22 × 3 × 2551 × 172492742421327197
2015-10-1325511724927424213271971.535e+9431,897,870806,664,945

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2003-09-21Team Prime Ribv4_computers1000010000006--0.0032.931%
2003-09-21Xyzzyv4_computers1000010000006--0.0032.931%
2013-11-13David Campeaui5-2500k11900003451000012--0.13811.255%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2001-11-03ANONYMOUSv4_computers212570.015
2003-06-17ANONYMOUSv4_computers212580.029
2022-03-07LordJuliusManual testing258260
2009-02-15Sturle Sundetristan.ifi2602610.118
2011-05-09XyzzyManual testing2612620.235
2013-01-03dbaughManual testing2622630.751
2015-04-09snme2pm1Manual testing2632641.502
2015-04-09snme2pm1Manual testing2642652.859
2015-10-02ramgeisManual testing2652665.719


ECM factoring results:
Total ECM effort:20.668 GHz-days
Estimated T-Level:25.704
DigitsB1CompleteFacMiss
201100014.6540.000%
25500001.65119.189%
302500000.14186.866%
3510000000.01099.021%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002499.479
50000500000020.077
250000350000005011.11


Lucas-Lehmer results:
No L-L results for M1306717


PRP results:
dateuseridcompidcofactorsres64
2017-09-30Oliver KruseGTX-0
13799840553366013611854812777
C65C5476D35DF2C8
2017-10-22kkmrkkblmbrbkc4.xlarge
13799840553366013611854812777
C65C5476D35DF2C8


CERT results:
No CERT results for M1306717


P-1 factor-bounds graph:
B1 = 1190000, B2 = 34510000 (P-1 stage 2)
B1 = 1190000 (P-1 stage 1)
B1 = 10000, B2 = 1000000 (P-1 stage 2)
B1 = 10000 (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=25.7 ~= 69-bit
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Last modified: 2024-02-09T03:30:02+00:00