is 2 10025383 - 1
has 3017942 decimal digits
takes 2.924 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LF6CECA00D314B47Edouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual27023.834665.7143 %11000019525000.08902.3897 %23.923566.5336 %
Target2685.945464.7059 %6500075000000.19882.5689 %6.144265.6125 %
Difference+2+17.8892+1.0084 %+45000-5547500-0.1098-0.1791 %+17.7793+0.9211 %

Known prime factors (1 factor, 77.5 bits, 0.00077309% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
100253832145553548945806695675032477.50610700606395515297
3 × 41 × 24391 × 3566758229
2019-02-092439135667582293,053.182.194153.50

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2004-04-29Team Prime Ribv4_computers550009487506--0.0442.217%
2012-01-19bcp19acer-Q820011000019525006--0.0893.016%


Trial Factoring results:
5758596061626364656667686970
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-07-26ANONYMOUSv4_computers212640.196
2011-10-11David CampeauManual testing2642650.373
2015-04-19ThaManual testing2652660.745
2015-11-10VictordeHollanderManual testing2662671.491
2016-04-22mikrManual testing2672682.982
2017-09-22ramgeisManual testing2682695.963
2021-01-29ViliamFManual testing269270


ECM factoring results:
Total ECM effort:1.331 GHz-days
Estimated T-Level:0.577
DigitsB1CompleteFacMiss
20110000.11589.102%
25500000.01198.938%


ECM Summary

B1B2factorcurvesGHz-days
50000500000020.887
50000500000010.444


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2000-05-05Peter Yuv4_computersF6CECA00D314B47E2.924
2004-06-12Team Prime Ribv4_computersF6CECA00D314B47E2.924


PRP results:
dateuseridcompidcofactorsres64
2021-04-09ATH5960X
214555354894580669567503
63190092E8F5AF64


CERT results:
dateuseridcompid
2021-04-09Ben Deloi-002787b1f22fb3b60


P-1 factor-bounds graph:
B1 = 110000, B2 = 1952500 (P-1 stage 2)
B1 = 110000 (P-1 stage 1)
B1 = 55000, B2 = 948750 (P-1 stage 2)
B1 = 55000 (P-1 stage 1)
103
104
105
106
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
270
269
268
267
266
265
264
this exponent TF target: 68
TF double-checked to: 67
ECM T-Level=0.58 ~= -15-bit
250
260
270
280
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Last modified: 2024-02-09T03:30:02+00:00