is 2 335428133 - 1
has 100973930 decimal digits
takes 4,989.493 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
Actual2835,840.099665.0602 %12000000360000000667.76855.2732 %6,507.868166.9027 %
Target2811,460.024564.1975 %2000000400000000510.83734.0606 %1,970.861865.6513 %
Difference+2+4,380.0751+0.8627 %+10000000-40000000+156.9313+1.2126%+4,537.0064+1.2513 %

Known prime factors (1 factor, 121.8 bits, 0.00003633% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
335428133477507629906665368534280020310229760137121.8457117882832843143907286393600
28 × 3 × 52 × 17 × 97 × 2177443 × 8369203 × 12336673
2019-12-21836920312336673382,736,805185.18367.38

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2019-12-21Roland ClarksonManual testing12000000360000000237121.845774.46.153%


Trial Factoring results:
575859606162636465666768697071727374757677787980818283
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-04-21Architects CubedManual testing2642650.011
2013-07-19LaurVManual testing2652660.022
2015-05-29Jacques MOLNEManual testing2662690.312
2016-04-01Jacques MOLNEManual testing2692700.356
2016-04-01Jacques MOLNEManual testing2702710.713
2016-04-01Jacques MOLNEManual testing2712721.426
2019-12-21Roland ClarksonManual testing2722835,837


ECM factoring results:
No ECM results for M335428133


Lucas-Lehmer results:
No L-L results for M335428133


PRP results:
No PRP results for M335428133


CERT results:
No CERT results for M335428133


P-1 factor-bounds graph:
B1 = 12000000, B2 = 360000000 (P-1 stage 2)
B1 = 12000000 (P-1 stage 1)
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TF factor-bounds graph:
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this exponent TF target: 81
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00