is 2 83408293 - 1
has 25108399 decimal digits
takes 260.274 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
Actual276183.482964.4737 %665000128012506.00073.3830 %189.483665.6755 %
Target27591.740464.0000 %5500009500000025.77233.9350 %117.512665.4166 %
Difference+1+91.7425+0.4737 %+115000-82198750-19.7715-0.5520 %+71.9710+0.2589 %

Known prime factors (1 factor, 80.8 bits, 0.00009688% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
8340829321180020677796730129435292580.80912696591619370948
22 × 11933 × 205981 × 1291369
2017-11-1620598112913695,419.11.19961.8968

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2017-11-16Architects Cubeda3_ac66500012801250622580.8096.0013.731%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-12-20Architects Cubedm1_612642650.045
2012-08-06Carsten KossendeyManual testing2652660.090
2013-02-10Le ComteManual testing2662680.538
2013-02-14saffaManual testing2682690.717
2013-03-04ANONYMOUS2692701.433
2014-03-05symalladSchool_Laptop2702712.867
2016-12-24ANONYMOUSManual testing27127586.01
2017-03-17ANONYMOUSManual testing27527691.74


ECM factoring results:
No ECM results for M83408293


Lucas-Lehmer results:
No L-L results for M83408293


PRP results:
No PRP results for M83408293


CERT results:
No CERT results for M83408293


P-1 factor-bounds graph:
B1 = 665000, B2 = 12801250 (P-1 stage 2)
B1 = 665000 (P-1 stage 1)
104
105
106
104
105
106
107
108
TF factor-bounds graph:
276
275
271
270
269
268
266
265
this exponent TF target: 75
TF double-checked to: 67
250
260
270
280
290
JSON version of this page
Last modified: 2024-03-13T02:15:48+00:00