is 2 99212903 - 1
has 29866060 decimal digits
takes 378.387 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
Actual27319.280263.0137 %9800002474500012.57995.4386 %31.860165.0253 %
Target276154.254164.4737 %65000011000000036.54143.8367 %190.795565.8367 %
Difference-3-134.9739-1.4600 %+330000-85255000-23.9616+1.6019%-158.9354-0.8115 %

Known prime factors (1 factor, 107.8 bits, 0.00010866% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
9921290328415737129527283451266151870464933107.8081432058546332793197839708
22 × 32 × 353 × 401 × 92221 × 318809 × 9558259
2019-10-2731880995582591.822e+94.54695.3788

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2019-10-27Ryan PropperManual testing980000247450006233107.80814.484.129%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-12-061997rj7Manual testing2642650.038
2012-12-17Jimmy BrüggemanniMac22652660.075
2014-04-19Carsten KossendeyManual testing2662680.452
2014-04-25KlikManual testing2682690.603
2014-10-24shaugeManual testing2692713.615
2017-01-05monstManual testing2712724.821
2019-05-02Niels_Mache_NextcloudManual testing2722739.64


ECM factoring results:
No ECM results for M99212903


Lucas-Lehmer results:
No L-L results for M99212903


PRP results:
No PRP results for M99212903


CERT results:
No CERT results for M99212903


P-1 factor-bounds graph:
B1 = 980000, B2 = 24745000 (P-1 stage 2)
B1 = 980000 (P-1 stage 1)
104
105
106
104
105
106
107
108
TF factor-bounds graph:
273
272
271
269
268
266
265
this exponent TF target: 76
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00