is 2 89303153 - 1
has 26882928 decimal digits
takes 301.067 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
Actual276171.371364.4737 %725000143187507.16453.5297 %178.535865.7276 %
Target27585.684664.0000 %60000010000000029.40654.0533 %115.091165.4592 %
Difference+1+85.6866+0.4737 %+125000-85681250-22.2419-0.5236 %+63.4447+0.2685 %

Known prime factors (1 factor, 88.7 bits, 0.00009929% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
893031534931389761291089734882590232788.6722761038997856598487
72 × 28573 × 226133 × 8720807
2018-11-0922613387208071,022,0743.36784.3380

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2018-11-09J.R. Allenlaphp725000143187501222788.6727.1653.888%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-11-09Architects Cubeda3_bu22642650.042
2013-03-19GustavSony2652660.084
2013-03-21SMoffatManual testing2662670.167
2013-03-23SMoffatManual testing2672680.335
2013-03-24SMoffatManual testing2682702.008
2013-09-22SMoffatManual testing2702712.678
2014-01-28PascalBieriManual testing2712725.355
2017-09-10Matthias WurtingerManual testing27227310.71
2017-09-13gcardonaManual testing27327421.42
2018-11-06Kevin JagetManual testing274276128.5


ECM factoring results:
No ECM results for M89303153


Lucas-Lehmer results:
No L-L results for M89303153


PRP results:
No PRP results for M89303153


CERT results:
No CERT results for M89303153


P-1 factor-bounds graph:
B1 = 725000, B2 = 14318750 (P-1 stage 2)
B1 = 725000 (P-1 stage 1)
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108
TF factor-bounds graph:
276
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271
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268
267
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265
this exponent TF target: 75
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00