is 2 140237 - 1
has 42216 decimal digits
takes 0.000 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L27F6D6FC45115345double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual267211.883673.1343 %10000000020000000000.942712.0174 %212.826376.3629 %
Target2440.000059.0909 %24002250000.00016.7614 %0.000161.8569 %
Difference+23+211.8836+14.0434 %+99997600+1999775000+0.9426+5.2560%+212.8262+14.5059 %

Known prime factors (1 factor, 90.1 bits, 0.06426772% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
14023713519688767916859378533558632890.1274820300194640807839063
23 × 1277 × 2137 × 76798162711069
2010-10-292137767981627110691.788e+919,38136,198

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2000-11-25ANONYMOUSv4_computers100000025000000--0.01128.021%
2002-06-02ANONYMOUSv4_computers32768327680012--0.00119.602%
2002-07-20ANONYMOUSv4_computers65536655360012--0.00222.199%
2003-02-09ANONYMOUSv4_computers1310721310720030--0.00424.756%
2003-09-29ANONYMOUSv4_computers2621442621440012--0.00827.266%
2017-03-18kkmrkkblmbrbkManual testing100000000200000000012---41.401%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-10-07ANONYMOUSv4_computers2522530.004
2000-04-27ANONYMOUSv4_computers212540.017
2022-03-07LordJuliusManual testing254255
2000-12-31ANONYMOUSv4_computers212560.068
2002-06-29ANONYMOUSv4_computers212570.137
2022-03-07LordJuliusManual testing257258
2009-01-01Sturle Sundegimba.ifi2582590.274
2009-01-23Sturle Sundegraun.ifi2592600.548


ECM factoring results:
Total ECM effort:12.598 GHz-days
Estimated T-Level:30.494
DigitsB1CompleteFacMiss
201100068.1400.000%
255000010.1440.004%
302500001.11932.645%
3510000000.09990.600%
4030000000.00799.274%


ECM Summary

B1B2factorcurvesGHz-days
10.046
5000050000002660.807
250000250000005829.72
1000000100000000302.027


Lucas-Lehmer results:
No L-L results for M140237


PRP results:
dateuseridcompidcofactorsres64
2017-09-21Oliver KruseOllaptop
1351968876791685937853355863
AD1D53771305196F
2017-09-22Oliver KruseManual testing
1351968876791685937853355863
AD1D53771305196F
2017-09-22Oliver KruseManual testing
1351968876791685937853355863
AD1D53771305196F
2017-11-06kkmrkkblmbrbkc4.xlarge
1351968876791685937853355863
AD1D53771305196F
2020-04-17Oliver KruseAddPrpType5
1351968876791685937853355863
52449EF3032CAB91
2024-02-03Wentao HuangManual testing
1351968876791685937853355863
52449EF3032CAB91


CERT results:
dateuseridcompid
2024-02-03Naegi Makoto1035G1


P-1 factor-bounds graph:
B1 = 100000000, B2 = 2000000000 (P-1 stage 2)
B1 = 100000000 (P-1 stage 1)
B1 = 1000000, B2 = 25000000 (P-1 stage 2)
B1 = 262144, B2 = 26214400 (P-1 stage 2)
B1 = 1000000 (P-1 stage 1)
B1 = 131072, B2 = 13107200 (P-1 stage 2)
B1 = 65536, B2 = 6553600 (P-1 stage 2)
B1 = 262144 (P-1 stage 1)
B1 = 32768, B2 = 3276800 (P-1 stage 2)
B1 = 131072 (P-1 stage 1)
B1 = 65536 (P-1 stage 1)
B1 = 32768 (P-1 stage 1)
102
103
104
105
106
107
108
102
103
104
105
106
107
108
109
1010
1011
1012
1013
1014
TF factor-bounds graph:
260
259
258
257
256
255
254
253
this exponent TF target: 44
TF double-checked to: 67
ECM T-Level=30.49 ~= 85-bit
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Last modified: 2024-02-29T14:28:04+00:00