is 2 577777777 - 1
has 173928442 decimal digits
takes 15,680.916 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
Actual281847.615362.9630 %----847.615362.9630 %
Target2833,390.462263.8554 %32000007000000001,619.91344.2093 %5,010.375665.3768 %
Difference-2-2,542.8469-0.8925 %-3200000-700000000-1,619.9134-4.2093 %-4,162.7603-2.4139 %

Known prime factors (1 factor, 103.5 bits, 0.00001791% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
5777777771420831763333273326522595155151932103.48712295659506935945431167
37357 × 105653 × 578483 × 5385269
2012-12-055784835385269222,197,35233.07146.331

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2012-12-05Norman LeyNorman_Ley32103.487441.60.000%


Trial Factoring results:
575859606162636465666768697071727374757677787980818283
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-03-02Architects Cubedds_012632640.003
2011-11-20Architects Cubeda3_ac2642650.006
2012-06-24Never Odd Or EvenManual testing2652700.401
2012-06-24Never Odd Or EvenManual testing2702710.414
2012-06-24Never Odd Or EvenManual testing2712720.828
2012-06-24Never Odd Or EvenManual testing2722731.656
2012-06-26Never Odd Or EvenManual testing2732743.311
2012-06-27Never Odd Or EvenManual testing2742756.622
2012-07-01Never Odd Or EvenManual testing27527613.24
2012-07-01Never Odd Or EvenManual testing27627726.49
2012-07-02Never Odd Or EvenManual testing27727852.98
2012-07-05Never Odd Or EvenManual testing278279106.0
2012-09-14Never Odd Or EvenManual testing279280211.9
2012-09-15Never Odd Or EvenManual testing280281423.8


ECM factoring results:
No ECM results for M577777777


Lucas-Lehmer results:
No L-L results for M577777777


PRP results:
No PRP results for M577777777


CERT results:
No CERT results for M577777777


P-1 factor-bounds graph:
104
105
106
104
105
106
107
TF factor-bounds graph:
281
280
279
278
277
276
275
274
273
272
271
270
265
264
this exponent TF target: 83
TF double-checked to: 67
250
260
270
280
290
2100
2110
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Last modified: 2024-03-13T02:15:48+00:00