is 2 3248111 - 1
has 977779 decimal digits
takes 0.276 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
Actual26818.350667.6471%10500001164471000.90557.5264%19.256170.0821%2.4350%
PrimeNet2600.047363.3333%140002600000.00342.7706%0.050764.3492%1.0159%
GPU722641.095865.6250%160002800000.00371.6547%1.099666.1938%0.5688%
Difference+4+17.2548+2.0221%+1034000+116167100+0.9017+5.8717%+18.1565+3.8883%+3.8883%

Known prime factors (3 factors, 129.2 bits, 0.00397805% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
32481116496223722.6311
1
-111.721e-131.234e-72.512e-7
3248111251078980311134.5473865
5 × 773
2008-09-0757731.294e-95.781e-69.748e-6
324811148314571760063425430492272.033743733384728284
22 × 31 × 571 × 10504115371
2018-09-2057110504115371497.3870.627131.91

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
32481111631065046706369131857.179
3248111313862232302874505740334039272994.664
324811112130773411631046838013151983651933106.580
324811178804209244426073983178312218695096773739129.212
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2020-05-02T05:50:03Jocelyn LaroucheManual testing32481132481116-
skipped known factor: 6496223
skipped known factor: 25107898031
--0.060--3.390%
2022-01-07T23:58:02Jocelyn LaroucheManual testing1050000116447100-
skipped known factor: 6496223
skipped known factor: 25107898031
--0.905--7.526%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-09-07T19:45:00Will EdgingtonManual testing??34.547115.89468e-100.6081.29726e-9
2021-09-11T10:41:51Jocelyn LaroucheManual testing267268--9.203--


ECM factoring results:

Old Calculation Method

Total ECM effort:0.236 GHz-days
Estimated T-Level:0.100
DigitsB1CurvesCompleteFacMiss
20110002 / 1000.02098.010%
25500002 / 2800.00799.287%

New Calculation Method

Total ECM effort:0.236 GHz-days
Estimated T-Level:0.100
DigitsB1CompleteFacMiss
20110000.07792.596%
25500000.00799.291%


ECM Summary

B1B2factorcurvesGHz-days
50000500000020.236


Lucas-Lehmer results:
No L-L results for M3248111


PRP results:
dateuseridcompidcofactorsres64PRP
2017-11-02T14:40:41Oliver KruseGTX-2
6496223
25107898031
5379C8C8B46890__no
2017-12-13T19:18:11kkmrkkblmbrbkc4.xlarge
6496223
25107898031
5379C8C8B46890__no
2018-09-24T03:21:14Oliver KruseGTX-1
6496223
25107898031
4831457176006342543049
5379C8C8B46890__no


P-1 factor-bounds graph:
B1 = 1050000, B2 = 116447100 (P-1 stage 2)
B1 = 1050000 (P-1 stage 1)
B1 = 324811, B2 = 3248111 (P-1 stage 2)
B1 = 324811 (P-1 stage 1)
100
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102
103
104
105
106
107
100
101
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105
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109
1010
1011
TF factor-bounds graph:
268
2
220
230
240
250
260
270
280
290
2100
Last modified: 2022-01-07T23:58:02+00:00