is 2 3278053 - 1
has 986793 decimal digits
takes 0.344 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LFA1C3FEAFCD8BB0Fdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26818.183067.6471 %10000001199121001.13897.5260 %19.321970.0820 %
Target2641.085865.6250 %1700014000000.01411.6871 %1.099966.2049 %
Difference+4+17.0972+2.0221 %+983000+118512100+1.1249+5.8389%+18.2221+3.8770 %

Known prime factors (1 factor, 61.7 bits, 0.00188089% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
327805336347108253684549611961.657554400863160
23 × 3 × 5 × 17 × 10949 × 24821
2009-05-2210949248210.09370.00180.0034

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2020-12-25JossManual testing109268109268
skipped known factor: 3634710825368454961
---1.577%
2021-01-03JossManual testing32780532780536
skipped known factor: 3634710825368454961
---5.144%
2022-02-04JossManual testing1000000119912100
skipped known factor: 3634710825368454961
--1.13910.496%


Trial Factoring results:
575859606162636465666768
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2001-05-27David Campeauv4_computers212600.023
2009-04-03S485122USB-A2602610.047
2022-04-06LordJuliusManual testing262263
2022-04-06LordJuliusManual testing263264
2022-04-06LordJuliusManual testing264265
2022-04-06LordJuliusManual testing265266
2022-04-06LordJuliusManual testing266267
2021-04-15JossManual testing267268


ECM factoring results:
Total ECM effort:0.200 GHz-days
DigitsB1CompleteFacMiss


ECM Summary

B1B2factorcurvesGHz-days
10.200


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-07-04ANONYMOUSv4_computersFA1C3FEAFCD8BB0F0.344


PRP results:
dateuseridcompidcofactorsres64
2017-11-03Oliver KruseGTX-2
3634710825368454961
33B2FDAAF42800BD
2017-12-14kkmrkkblmbrbkc4.xlarge
3634710825368454961
33B2FDAAF42800BD


CERT results:
No CERT results for M3278053


P-1 factor-bounds graph:
B1 = 1000000, B2 = 119912100 (P-1 stage 2)
B1 = 1000000 (P-1 stage 1)
B1 = 327805, B2 = 3278053 (P-1 stage 2)
B1 = 327805 (P-1 stage 1)
B1 = 109268 (P-1 stage 1)
103
104
105
106
103
104
105
106
107
108
109
TF factor-bounds graph:
268
267
266
265
264
263
261
260
this exponent TF target: 64
TF double-checked to: 67
250
260
270
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Last modified: 2024-03-03T02:29:32+00:00