is 2 65658601 - 1
has 19765209 decimal digits
takes 159.268 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
Actual27458.269164.8649 %605000146712504.82354.0551 %63.092566.2896 %
Target27458.269164.8649 %4500007500000015.86883.9185 %74.137866.2416 %
Difference---+155000-60328750-11.0453+0.1366%-11.0453+0.0480 %

Known prime factors (1 factor, 93.4 bits, 0.00014231% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
65658601134132616764480516064823153212993.438102143980165279881660
22 × 3 × 5 × 13 × 99083 × 243311 × 5431969
2014-01-10243311543196938,089,7941.85011.9442

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2014-01-10Craig MeyersManual testing60500014671250622993.4382.9324.055%


Trial Factoring results:
575859606162636465666768697071727374
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2003-11-16Gordon Spencev4_computers212590.001
2004-07-021997rj7v4_computers212600.001
2022-03-30LordJuliusManual testing260263
2009-01-20Wojciech FlorekManual testing2632640.030
2009-11-01Sturle Sundejodel.ifi2642650.057
2009-11-07TylerCAMD3000_2652660.114
2009-11-08Sturle Sundebach.ifi2662670.228
2009-11-13sannerud.comJimEmcDesk2672680.455
2009-11-17arnaudSPR032682690.910
2013-03-24David CampeauManual testing2692715.463
2014-01-02kdgehmanManual testing27127450.99


ECM factoring results:
No ECM results for M65658601


Lucas-Lehmer results:
No L-L results for M65658601


PRP results:
No PRP results for M65658601


CERT results:
No CERT results for M65658601


P-1 factor-bounds graph:
B1 = 605000, B2 = 14671250 (P-1 stage 2)
B1 = 605000 (P-1 stage 1)
104
105
106
104
105
106
107
108
TF factor-bounds graph:
274
271
269
268
267
266
265
264
263
260
259
this exponent TF target: 74
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00