is 2 6016123 - 1
has 1811034 decimal digits
takes 1.066 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LAE191A438EDCF057double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2674.939065.6716 %200000020000000.51393.9081 %5.453067.0132 %
Target2662.454865.1515 %4000045000000.07272.4182 %2.527565.9942 %
Difference+1+2.4842+0.5201 %+1960000-2500000+0.4412+1.4899%+2.9255+1.0190 %

Known prime factors (2 factors, 137.9 bits, 0.00229165% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
60161235037268677589572134472168.77141864741442201
3 × 29 × 647609 × 743047
2018-06-256476097430479.9080.16780.3387
60161236314324867276891848732169.09752478355805532
22 × 13119588951383
2017-10-1341311958895138319.844183,682343,066

1 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2000-11-05davidcrossv4_computers2500025000--0.0060.538%
2011-03-21markrtiny11000021725006--0.0573.601%
2018-06-25mikrS0652000000200000012168.7710.5144.314%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1998-05-23Scott Kurowskiv4_computers212620.051
2016-02-23Mark RoseManual testing2622630.163
2014-04-28c10ck3rManual testing2632650.947
2015-10-02snme2pm1Manual testing2652661.242
2016-03-11Gordon SpenceManual testing2662672.484


ECM factoring results:
Total ECM effort:1.347 GHz-days
Estimated T-Level:0.962
DigitsB1CompleteFacMiss
20110000.19282.505%
25500000.01898.236%
302500000.00199.888%


ECM Summary

B1B2factorcurvesGHz-days
50000500000041.078
50000500000010.269


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-06-15Wayne Yeungv4_computersAE191A438EDCF0571.066
2000-12-07davidcrossv4_computersAE191A438EDCF0571.066


PRP results:
dateuseridcompidcofactorsres64
2017-12-13Chang Chia-Tchehomura
631432486727689184873
4DC8BD2B5C8697A2
2018-05-03kkmrkkblmbrbkc5.large
631432486727689184873
4DC8BD2B5C8697A2
2018-06-25ATHwork102442
503726867758957213447
631432486727689184873
4DC8BD2B5C8697A2
2018-06-25francijezekstacF
503726867758957213447
631432486727689184873
4DC8BD2B5C8697A2


CERT results:
No CERT results for M6016123


P-1 factor-bounds graph:
B1 = 2000000 (P-1 stage 1)
B1 = 110000, B2 = 2172500 (P-1 stage 2)
B1 = 110000 (P-1 stage 1)
B1 = 25000 (P-1 stage 1)
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TF factor-bounds graph:
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this exponent TF target: 66
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