is 2 89586439 - 1
has 26968206 decimal digits
takes 302.022 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
Actual276170.829464.4737 %7250007250003.54411.4724 %174.373464.9968 %
Target27585.413764.0000 %60000010000000029.40654.0548 %114.820265.4597 %
Difference+1+85.4157+0.4737 %+125000-99275000-25.8624-2.5824 %+59.5533-0.4629 %

Known prime factors (1 factor, 76.4 bits, 0.00008529% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
895864391001320451006867860923612476.406558857156386620
22 × 3 × 5 × 7 × 13 × 312 × 47 × 67 × 149 × 227
2018-11-12961961279.540.00470.0096

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2018-11-12XyzzyA6-362072500072500012476.4063.5441.652%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-11-10Architects Cubedm1_752642650.042
2013-03-22g0bManual testing2652660.083
2013-07-24Norman LeyManual testing2662670.167
2013-07-25processinfoManual testing2672691.001
2013-07-27processinfoManual testing2692701.335
2013-08-18SMoffatManual testing2702712.669
2017-08-31Sid & AndyManual testing27127316.02
2017-10-14RichD0Manual testing27327421.35
2018-10-25Strolling JellyfishManual testing274276128.1


ECM factoring results:
No ECM results for M89586439


Lucas-Lehmer results:
No L-L results for M89586439


PRP results:
No PRP results for M89586439


CERT results:
No CERT results for M89586439


P-1 factor-bounds graph:
B1 = 725000 (P-1 stage 1)
101
102
103
104
105
106
101
102
103
104
105
106
TF factor-bounds graph:
276
274
273
271
270
269
267
266
265
this exponent TF target: 75
TF double-checked to: 67
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280
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Last modified: 2024-03-13T02:15:48+00:00