is 2 3249137 - 1
has 978088 decimal digits
takes 0.277 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26818.344867.6471%10749121164471000.90847.5457%19.253270.0883%2.4412%
PrimeNet2600.047363.3333%140002600000.00342.7707%0.050764.3493%1.0159%
GPU722641.095565.6250%160002800000.00371.6548%1.099266.1938%0.5688%
Difference+4+17.2494+2.0221%+1058912+116167100+0.9046+5.8909%+18.1540+3.8945%+3.8945%

Known prime factors (2 factors, 126.1 bits, 0.00388234% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
324913716908213406498491650.587260195452
22 × 11 × 5913533
-1159135336.287e-50.03980.0743
3249137555421124998162563676812375.5568547209997580320
25 × 3 × 5 × 11 × 1618789772269
2018-09-203216187897722694,037.310,88420,329

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
32491379391178911946405861127901549682113016938126.143
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2020-12-25T20:19:21Jocelyn LaroucheManual testing108304108304---0.013--0.905%
2021-01-15T23:31:00Jocelyn LaroucheManual testing32491332491376---0.060--3.391%
2022-01-08T03:24:05Jocelyn LaroucheManual testing1074912116447100-
skipped known factor: 1690821340649849
--0.908--7.546%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2021-10-02T12:15:31Jocelyn LaroucheManual testing267268--9.200--


ECM factoring results:

Old Calculation Method

Total ECM effort:0.353 GHz-days
Estimated T-Level:0.150
DigitsB1CurvesCompleteFacMiss
20110003 / 1000.03097.030%
25500003 / 2800.01198.932%

New Calculation Method

Total ECM effort:0.353 GHz-days
Estimated T-Level:0.150
DigitsB1CompleteFacMiss
20110000.11589.102%
25500000.01198.938%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.353


Lucas-Lehmer results:
No L-L results for M3249137


PRP results:
dateuseridcompidcofactorsres64PRP
2017-11-02T15:15:36Oliver KruseGTX-3
1690821340649849
EA5495572124AA__no
2017-12-13T19:46:52kkmrkkblmbrbkc4.xlarge
1690821340649849
EA5495572124AA__no
2018-10-20T21:29:30J.R. AllenManual testing
1690821340649849
55542112499816256367681
EA5495572124AA__no


P-1 factor-bounds graph:
B1 = 1074912, B2 = 116447100 (P-1 stage 2)
B1 = 1074912 (P-1 stage 1)
B1 = 324913, B2 = 3249137 (P-1 stage 2)
B1 = 324913 (P-1 stage 1)
B1 = 108304 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-01-08T03:24:05+00:00