is 2 99261853 - 1
has 29880796 decimal digits
takes 378.574 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
Actual27319.270763.0137 %9800002474500012.57995.4389 %31.850665.0254 %
Target276154.178064.4737 %65000011000000036.54143.8369 %190.719465.8368 %
Difference-3-134.9073-1.4600 %+330000-85255000-23.9616+1.6020%-158.8689-0.8114 %

Known prime factors (1 factor, 103.8 bits, 0.00010454% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
992618531733227235101836327799376033762332103.77387305806949918430789287
89 × 419 × 4231 × 6043 × 10301 × 8889229
2019-10-271030188892291.938e+92.73225.0023

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2019-10-27Ryan PropperManual testing980000247450006232103.77314.484.129%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-11-291997rj7Manual testing2642650.038
2013-01-09Jimmy BrüggemannManual testing2652660.075
2014-04-19Carsten KossendeyManual testing2662680.452
2014-04-24KlikManual testing2682690.602
2014-07-07g0bManual testing2692701.205
2014-10-07Per Jessenbeaufort32702712.409
2017-01-17monstManual testing2712724.818
2019-04-24Niels_Mache_NextcloudManual testing2722739.64


ECM factoring results:
No ECM results for M99261853


Lucas-Lehmer results:
No L-L results for M99261853


PRP results:
No PRP results for M99261853


CERT results:
No CERT results for M99261853


P-1 factor-bounds graph:
B1 = 980000, B2 = 24745000 (P-1 stage 2)
B1 = 980000 (P-1 stage 1)
103
104
105
106
103
104
105
106
107
108
TF factor-bounds graph:
273
272
271
270
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