is 2 2399081 - 1
has 722196 decimal digits
takes 0.162 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26712.385567.1642 %2000000600000000.50557.6150 %12.891069.6646 %
Target2630.665365.0794 %100007000000.00471.2747 %0.669965.5245 %
Difference+4+11.7203+2.0848 %+1990000+59300000+0.5008+6.3402%+12.2211+4.1401 %

Known prime factors (4 factors, 171.5 bits, 0.00714957% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
2399081134348537927.00128
22 × 7
-477.498e-124.078e-77.974e-7
23990814355915408471238.66490783
32 × 7 × 11 × 131
2008-07-14111312.519e-81.718e-62.193e-6
239908128988671454458391651.364604161999
32 × 7 × 23 × 53 × 7867
2014-06-255378670.00024.689e-57.838e-5
2399081253720327505888171754.4945287864968
23 × 32 × 73442569
2014-11-269734425690.00150.39200.7321

11 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2018-09-28alpertronManual testing20000006000000012
skipped known factor: 134348537
skipped known factor: 435591540847
skipped known factor: 2898867145445839
---10.524%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2014-06-25TJAOIManual testing??
51.364
16
8.09978e-5
2014-11-26TJAOIManual testing254255*
54.494
17
0.000


ECM factoring results:
Total ECM effort:6.395 GHz-days
Estimated T-Level:21.162
DigitsB1CompleteFacMiss
20110002.4908.288%
25500000.23279.266%
302500000.01598.533%


ECM Summary

B1B2factorcurvesGHz-days
10.066
50000500000030.267
50000699846770.727
500007000000505.335


Lucas-Lehmer results:
No L-L results for M2399081


PRP results:
dateuseridcompidcofactorsres64
2017-10-12Oliver KruseGTX-2
134348537
435591540847
2898867145445839
25372032750588817
8A89B79D19803D7C
2017-11-26kkmrkkblmbrbkc4.xlarge
134348537
435591540847
2898867145445839
25372032750588817
8A89B79D19803D7C


CERT results:
No CERT results for M2399081


P-1 factor-bounds graph:
B1 = 2000000, B2 = 60000000 (P-1 stage 2)
B1 = 2000000 (P-1 stage 1)
100
101
102
103
104
105
106
107
100
101
102
103
104
105
106
107
108
TF factor-bounds graph:
this exponent TF target: 63
TF double-checked to: 67
ECM T-Level=21.16 ~= 54-bit
250
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270
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Last modified: 2024-03-13T02:15:48+00:00