is 2 14010797 - 1
has 4217671 decimal digits
takes 6.216 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LB84B83CCDBFE2DD2double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual27134.122166.1972 %60000001600000009.25788.2718 %43.380068.9933 %
Target2698.521165.2174 %90000120000000.47542.8534 %8.996466.2099 %
Difference+2+25.6011+0.9798 %+5910000+148000000+8.7825+5.4184%+34.3836+2.7834 %

Known prime factors (1 factor, 80.8 bits, 0.00057664% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1401079720932524080849806132604812580.79274701403784701920
25 × 5 × 312 × 432 × 262753483
2020-10-09184926275348330,5669.210817.201

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2004-03-01Miiikev4_computers1550001821250--0.1582.934%
2020-09-26masserManual testing60000006000000--3.8604.949%
2020-10-09masserManual testing60000001600000001222580.7929.2589.617%


Trial Factoring results:
575859606162636465666768697071
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2000-11-25ANONYMOUSv4_computers212650.267
2014-07-22NesowaManual testing2652660.533
2015-08-18ThaManual testing2662671.067
2018-02-05ramgeisManual testing2672696.400
2018-09-12mikrManual testing2692708.534
2020-06-05masserManual testing27027117.07


ECM factoring results:
Total ECM effort:4.723 GHz-days
Estimated T-Level:1.346
DigitsB1CompleteFacMiss
20110000.26976.397%
25500000.02597.540%
302500000.00299.843%


ECM Summary

B1B2factorcurvesGHz-days
50000500000074.723


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2004-03-08Miiikev4_computersB84B83CCDBFE2DD26.216
2005-05-12Sturle Sundev4_computersB84B83CCDBFE2DD26.216


PRP results:
dateuseridcompidcofactorsres64
2022-12-07Perigbruthcharraig
2093252408084980613260481
FA261CF0BCA6DAE5


CERT results:
dateuseridcompid
2022-12-07iwessrvwes34


P-1 factor-bounds graph:
B1 = 6000000, B2 = 160000000 (P-1 stage 2)
B1 = 6000000 (P-1 stage 1)
B1 = 155000, B2 = 1821250 (P-1 stage 2)
B1 = 155000 (P-1 stage 1)
102
103
104
105
106
107
102
103
104
105
106
107
108
109
TF factor-bounds graph:
271
270
269
267
266
265
this exponent TF target: 69
TF double-checked to: 67
ECM T-Level=1.35 ~= -12-bit
250
260
270
280
290
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Last modified: 2024-03-13T02:15:48+00:00