is 2 5886889 - 1
has 1772131 decimal digits
takes 1.043 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LB20BBBD074DA4B76double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2675.047565.6716 %25000250000.00640.4536 %5.053965.8273 %
Target2662.508765.1515 %4000040000000.06572.3404 %2.574465.9671 %
Difference+1+2.5388+0.5201 %-15000-3975000-0.0593-1.8868 %+2.4795-0.1398 %

Known prime factors (1 factor, 64.1 bits, 0.00108852% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
5886889194994556425319702572064.0801656176602152
23 × 3 × 41 × 3677 × 457739
2011-03-0536774577390.61450.00730.0120

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2000-10-07ANONYMOUSv4_computers2500025000--0.0060.535%
2011-03-05USAFSSP4_26002064.0800.0310.000%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1998-05-08Sturle Sundev4_computers212620.052
2009-02-14GrunwalderGIMPManual testing2622630.167


ECM factoring results:
No ECM results for M5886889


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-10-18ANONYMOUSv4_computersB20BBBD074DA4B761.043
2000-10-22ANONYMOUSv4_computersB20BBBD074DA4B761.043


PRP results:
dateuseridcompidcofactorsres64
2017-09-20kkmrkkblmbrbkManual testing
19499455642531970257
92DE556A6F3AB95E
2018-09-13Luigi MorelliCS50X-C9
19499455642531970257
92DE556A6F3AB95E


CERT results:
No CERT results for M5886889


P-1 factor-bounds graph:
B1 = 25000 (P-1 stage 1)
102
103
104
105
102
103
104
105
106
TF factor-bounds graph:
263
262
this exponent TF target: 66
TF double-checked to: 67
250
260
270
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Last modified: 2024-03-13T02:15:48+00:00