is 2 333001891 - 1
has 100243558 decimal digits
takes 4,953.403 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
Actual2811,470.662264.1975 %2575000257500055.53951.7290 %1,526.201764.8165 %
Target2811,470.662264.1975 %1900000400000000508.79794.0328 %1,979.460165.6414 %
Difference---+675000-397425000-453.2584-2.3038 %-453.2584-0.8248 %

Known prime factors (1 factor, 86.4 bits, 0.00002596% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
3330018911049477354212822274458001932786.440157578287477776256
27 × 7 × 13 × 41 × 389 × 23669 × 35837
2020-07-16236693583747,0610.52481.0390

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2020-07-16Simon Josefssoncto72575000257500012786.44055.541.729%


Trial Factoring results:
57585960616263646566676869707172737475767778798081
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-11-02Architects Cubedm1_fw2652660.022
2011-04-13rduerrManual testing2662690.314
2011-04-13rduerrManual testing2692700.359
2011-11-29laleraManual testing2702710.718
2013-01-12LaurVManual testing2712721.436
2016-07-27Carsten KossendeyManual testing2722732.872
2016-08-01Adam BuranManual testing2732745.745
2018-11-27mikrManual testing27427511.49
2018-11-27mikrManual testing27527622.98
2019-03-19mikrManual testing27627745.96
2020-05-14KrieselManual testing27727891.92
2020-06-29Di SaberManual testing278279183.8
2020-07-12Albrecht HeefferManual testing279280367.7
2020-07-13Albrecht HeefferManual testing280281735.3


ECM factoring results:
No ECM results for M333001891


Lucas-Lehmer results:
No L-L results for M333001891


PRP results:
No PRP results for M333001891


CERT results:
No CERT results for M333001891


P-1 factor-bounds graph:
B1 = 2575000 (P-1 stage 1)
103
104
105
106
107
103
104
105
106
107
TF factor-bounds graph:
281
280
279
278
277
276
275
274
273
272
271
270
269
266
this exponent TF target: 81
TF double-checked to: 67
250
260
270
280
290
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Last modified: 2024-03-13T02:15:48+00:00