is 2 82254379 - 1
has 24761036 decimal digits
takes 256.674 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
Actual27593.027464.0000 %700000143500006.53233.8350 %99.559665.3806 %
Target27593.027464.0000 %5500009000000024.53973.8880 %117.567065.3997 %
Difference---+150000-75650000-18.0074-0.0530 %-18.0074-0.0191 %

Known prime factors (1 factor, 79.2 bits, 0.00009626% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
822543796843102362593656437388012479.1794159719181998600
23 × 3 × 52 × 11 × 41 × 103 × 167 × 893681
2017-07-141678936812,551.70.22100.4115

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2017-07-14Oliver KruseManual testing700000143500001222479.1797.5833.835%


Trial Factoring results:
57585960616263646566676869707172737475
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-12-17Architects Cubedm1_162642650.045
2012-08-27Carsten KossendeyManual testing2652660.091
2013-01-29SMoffatManual testing2662670.182
2013-01-30SMoffatManual testing2672680.363
2013-02-07ANONYMOUS2682690.727
2013-02-20ANONYMOUS2692701.454
2013-11-03GrunwalderGIMPcompute-0-52702712.907
2016-11-02VictordeHollanderManual testing27127317.44
2016-12-05Brian BeuningManual testing27327569.77


ECM factoring results:
No ECM results for M82254379


Lucas-Lehmer results:
No L-L results for M82254379


PRP results:
No PRP results for M82254379


CERT results:
No CERT results for M82254379


P-1 factor-bounds graph:
B1 = 700000, B2 = 14350000 (P-1 stage 2)
B1 = 700000 (P-1 stage 1)
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108
TF factor-bounds graph:
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this exponent TF target: 75
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00