is 2 80912003 - 1
has 24356940 decimal digits
takes 252.485 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
Actual27594.570764.0000 %680000137700006.30373.7824 %100.874565.3616 %
Target27594.570764.0000 %5000008500000023.09323.7881 %117.663965.3637 %
Difference---+180000-71230000-16.7894-0.0058 %-16.7894-0.0021 %

Known prime factors (1 factor, 87.7 bits, 0.00010840% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
809120032524417524645518957975910892787.7061559977154839139848
23 × 7 × 47 × 7867 × 48119 × 1565693
2017-03-18481191565693636,2270.59180.7209

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2017-03-18bamDesk1680000137700001222787.7066.3043.782%


Trial Factoring results:
57585960616263646566676869707172737475
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-12-01Architects Cubedm1_622642650.046
2011-02-04UngelovendeManual testing2652670.277
2011-02-11Tommaso Mauro Tautonico2672680.369
2011-02-12KarlMJManual testing2682690.739
2011-02-22KarlMJManual testing2692701.478
2013-06-12Juergen KampmeierManual testing27027320.69
2016-10-27Judge HaleManual testing27327423.64
2016-11-02The MawnManual testing27427547.29


ECM factoring results:
No ECM results for M80912003


Lucas-Lehmer results:
No L-L results for M80912003


PRP results:
No PRP results for M80912003


CERT results:
No CERT results for M80912003


P-1 factor-bounds graph:
B1 = 680000, B2 = 13770000 (P-1 stage 2)
B1 = 680000 (P-1 stage 1)
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108
TF factor-bounds graph:
275
274
273
270
269
268
267
265
this exponent TF target: 75
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00