is 2 98820749 - 1
has 29748010 decimal digits
takes 376.891 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
Actual27319.356763.0137 %9850009850005.44722.3685 %24.803963.8897 %
Target276154.866264.4737 %65000011000000036.54143.8349 %191.407665.8361 %
Difference-3-135.5095-1.4600 %+335000-109015000-31.0943-1.4663 %-166.6037-1.9463 %

Known prime factors (1 factor, 100.0 bits, 0.00010118% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
9882074912570290493311396450068466312713199.9886360147347856772695615
32 × 5 × 13 × 47 × 277 × 31489 × 43003 × 616703
2019-10-17430036167031.841e+90.41070.4840

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2019-10-17Ryan PropperManual testing98500098500013199.9886.2681.703%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2011-02-071997rj7Manual testing2642650.038
2013-07-29David CampeauManual testing2652660.076
2013-08-02SMoffatManual testing2662670.151
2014-04-16Carsten KossendeyManual testing2672680.302
2014-06-22NoWhereManT10652682690.605
2014-07-02Smok_bmvManual testing2692701.210
2014-10-05SMoffatManual testing2702712.420
2018-12-23masserManual testing2712724.840
2019-03-27Niels_Mache_NextcloudManual testing2722739.68


ECM factoring results:
No ECM results for M98820749


Lucas-Lehmer results:
No L-L results for M98820749


PRP results:
No PRP results for M98820749


CERT results:
No CERT results for M98820749


P-1 factor-bounds graph:
B1 = 985000 (P-1 stage 1)
103
104
105
106
103
104
105
106
TF factor-bounds graph:
273
272
271
270
269
268
267
266
265
this exponent TF target: 76
TF double-checked to: 67
250
260
270
280
290
2100
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Last modified: 2024-03-13T02:15:48+00:00