is 2 2634161 - 1
has 792962 decimal digits
takes 0.203 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LFEC83EB147D4E224double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26711.280267.1642 %2000000600000000.57797.6882 %11.858169.6887 %
Target2630.605965.0794 %1300010000000.00751.5729 %0.613465.6286 %
Difference+4+10.6743+2.0848 %+1987000+59000000+0.5704+6.1153%+11.2447+4.0600 %

Known prime factors (1 factor, 67.5 bits, 0.00256421% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
26341612153697746824643403532167.54540880146407616
26 × 638752287619
2014-10-146463875228761911.2803,897.47,279.3

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2003-10-31ANONYMOUSv4_computers2048204800--0.0010.671%
2009-06-21USAFSSP4_260030000420000--0.0062.402%
2011-01-18James Heinrichi7-92018000042750006--0.0455.488%
2019-07-04alpertronManual testing20000006000000012---10.616%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-03-26ANONYMOUSv4_computers212590.015
2022-03-11LordJuliusManual testing21260
2009-01-27Sturle Sundeeberlin.ifi2602610.058
2012-06-16Grant McCrackenthumper2612620.117
2013-01-14dbaughManual testing2622630.373


ECM factoring results:
Total ECM effort:1.096 GHz-days
Estimated T-Level:1.731
DigitsB1CompleteFacMiss
20110000.34670.740%
25500000.03296.848%
302500000.00299.798%


ECM Summary

B1B2factorcurvesGHz-days
10.302
50000500000090.795


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-04-13ANONYMOUSv4_computersFEC83EB147D4E2240.203


PRP results:
dateuseridcompidcofactorsres64
2017-10-17Oliver KruseGTX-2
215369774682464340353
AC25967C9BF5F47F
2017-12-02kkmrkkblmbrbkc4.xlarge
215369774682464340353
AC25967C9BF5F47F


CERT results:
No CERT results for M2634161


P-1 factor-bounds graph:
B1 = 2000000, B2 = 60000000 (P-1 stage 2)
B1 = 2000000 (P-1 stage 1)
B1 = 180000, B2 = 4275000 (P-1 stage 2)
B1 = 180000 (P-1 stage 1)
B1 = 30000, B2 = 420000 (P-1 stage 2)
B1 = 30000 (P-1 stage 1)
B1 = 2048, B2 = 204800 (P-1 stage 2)
B1 = 2048 (P-1 stage 1)
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1010
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TF factor-bounds graph:
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262
261
260
259
this exponent TF target: 63
TF double-checked to: 67
ECM T-Level=1.73 ~= -11-bit
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Last modified: 2024-02-09T03:30:02+00:00