is 2 7934063 - 1
has 2388391 decimal digits
takes 1.815 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L62317E9138CF6B0Bdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2687.512566.1765 %21000050400000.15703.9751 %7.669567.5210 %
Target2673.745165.6716 %5500060000000.12572.5635 %3.870866.5516 %
Difference+1+3.7674+0.5048 %+155000-960000+0.0313+1.4117%+3.7987+0.9694 %

Known prime factors (1 factor, 79.7 bits, 0.00100509% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
793406310124213394198599039934792579.74463802199416607853
3 × 17 × 1251023517972703
2018-10-1717125102351797270315,43122,614,42242,237,443

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2001-03-25ANONYMOUSv4_computers900001170000--0.0492.795%
2015-07-12Squeeky_SquirrelP4_260021000050400006--0.1574.413%


Trial Factoring results:
575859606162636465666768
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1998-09-13ANONYMOUSv4_computers212620.039
1999-08-22ANONYMOUSv4_computers212630.124
2013-10-01NesowaManual testing2632640.247
2013-12-21David CampeauManual testing2642650.471
2015-06-03VictordeHollanderManual testing2652660.942
2016-08-16Gordon SpenceManual testing2662671.884
2018-07-24ramgeisManual testing2672683.767


ECM factoring results:
Total ECM effort:1.740 GHz-days
Estimated T-Level:0.962
DigitsB1CompleteFacMiss
20110000.19282.505%
25500000.01898.236%
302500000.00199.888%


ECM Summary

B1B2factorcurvesGHz-days
50000500000031.044
50000500000020.696


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-12-01ANONYMOUSv4_computers62317E9138CF6B0B1.815
2001-04-29ANONYMOUSv4_computers62317E9138CF6B0B1.815


PRP results:
dateuseridcompidcofactorsres64
2018-10-21Oliver KruseGTX-5
1012421339419859903993479
396075F380557966
2018-10-23J.R. AllenManual testing
1012421339419859903993479
396075F380557966


CERT results:
No CERT results for M7934063


P-1 factor-bounds graph:
B1 = 210000, B2 = 5040000 (P-1 stage 2)
B1 = 210000 (P-1 stage 1)
B1 = 90000, B2 = 1170000 (P-1 stage 2)
B1 = 90000 (P-1 stage 1)
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TF factor-bounds graph:
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this exponent TF target: 67
TF double-checked to: 67
ECM T-Level=0.96 ~= -13-bit
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Last modified: 2024-02-09T03:30:02+00:00