is 2 2340071 - 1
has 704432 decimal digits
takes 0.158 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L3857BC4FF946E9AAdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26712.697967.1642 %60000001800000001.51649.6750 %14.214270.3410 %
Target2620.262564.5161 %1300010000000.00651.7850 %0.269165.1495 %
Difference+5+12.4353+2.6481 %+5987000+179000000+1.5098+7.8900%+13.9451+5.1915 %

Known prime factors (1 factor, 70.1 bits, 0.00299742% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
234007113025259033466547318472270.142278309056295013
3 × 41 × 89917 × 25164043
2018-03-108991725164043113.460.14260.2508

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2003-09-21ANONYMOUSv4_computers2048204800--0.0010.792%
2010-03-01Budannan5000001000000012--0.1027.764%
2018-03-10Sid & AndyHand_In_The_Box60000001800000001222270.1421.55713.809%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2016-02-23Mark RoseManual testing212600.066
2009-01-11Sturle Sundegobi.ifi2602610.066
2012-05-28Sebastian HornbostelManual testing2612620.131
2013-01-23dbaughManual testing2622630.419
2015-03-06VictordeHollanderManual testing2632652.436
2015-10-25ramgeisManual testing2652663.193
2017-06-10Gordon SpenceManual testing2662676.387


ECM factoring results:
Total ECM effort:7.720 GHz-days
Estimated T-Level:21.534
DigitsB1CompleteFacMiss
20110003.2693.804%
25500000.30773.577%
302500000.01998.077%


ECM Summary

B1B2factorcurvesGHz-days
500005000000332.804
500006300000504.915


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-03-01ANONYMOUSv4_computers3857BC4FF946E9AA0.158


PRP results:
dateuseridcompidcofactorsres64
2018-03-10ATHec2-1xh
1302525903346654731847
288AABD5BF0BC01B
2018-03-11kkmrkkblmbrbkc5.xlarge
1302525903346654731847
288AABD5BF0BC01B


CERT results:
No CERT results for M2340071


P-1 factor-bounds graph:
B1 = 6000000, B2 = 180000000 (P-1 stage 2)
B1 = 6000000 (P-1 stage 1)
B1 = 500000, B2 = 10000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
B1 = 2048, B2 = 204800 (P-1 stage 2)
B1 = 2048 (P-1 stage 1)
102
103
104
105
106
107
102
103
104
105
106
107
108
109
TF factor-bounds graph:
267
266
265
263
262
261
260
this exponent TF target: 62
TF double-checked to: 67
ECM T-Level=21.53 ~= 55-bit
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Last modified: 2024-03-26T07:28:17+00:00