is 2 105575551 - 1
has 31781408 decimal digits
takes 433.006 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
Actual276144.957764.4737 %125700012570007.47541.8984 %152.433165.1481 %
Target276144.957764.4737 %70000012000000042.81733.9683 %187.775065.8835 %
Difference---+557000-118743000-35.3419-2.0699 %-35.3419-0.7354 %

Known prime factors (1 factor, 76.1 bits, 0.00007209% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
105575551814980091685543642155912376.109385970086808045
5 × 37 × 89 × 125959 × 186107
2021-08-18125959186107276.900.76861.5245

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2021-08-18ChuckMaingear_i7-78001257000125700012376.1097.2571.898%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-04-20carlos56phenom8102632640.019
2010-09-01Torchwood InstituteATH2-630-temp2642650.035
2012-05-12Torchwood InstituteOpt6128x4x42652660.071
2013-09-13ANONYMOUS2662670.142
2013-09-16SMoffatManual testing2672680.283
2014-06-16PascalBieriManual testing2682690.566
2014-06-21PascalBieriManual testing2692701.133
2014-06-28ITSWUV2702712.265
2018-02-11el groccoManual testing2712724.530
2020-01-06TheGazManManual testing2722739.060
2020-04-03SRBaseManual testing27327418.12
2021-03-29TheJudgerManual testing274276108.7


ECM factoring results:
No ECM results for M105575551


Lucas-Lehmer results:
No L-L results for M105575551


PRP results:
No PRP results for M105575551


CERT results:
No CERT results for M105575551


P-1 factor-bounds graph:
B1 = 1257000 (P-1 stage 1)
104
105
106
107
104
105
106
107
TF factor-bounds graph:
276
274
273
272
271
270
269
268
267
266
265
264
this exponent TF target: 76
TF double-checked to: 67
250
260
270
280
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Last modified: 2024-03-13T02:15:48+00:00