is 2 2629903 - 1
has 791680 decimal digits
takes 0.203 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L48D6B3A5CC9A0A9Adouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26711.298567.1642 %2000000600000000.57797.6869 %11.876469.6882 %
Target2630.606965.0794 %1300010000000.00751.5724 %0.614465.6285 %
Difference+4+10.6916+2.0848 %+1987000+59000000+0.5704+6.1145%+11.2620+4.0598 %

Known prime factors (1 factor, 69.0 bits, 0.00262334% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
26299035867128369339239768892168.991111546478507748
22 × 683 × 29453 × 1386263
2010-06-1629453138626328.6080.01160.0158

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2003-06-09Richard B. Woodsv4_computers450020000--0.0010.466%
2004-07-02Richard B. Woodsv4_computers2500025000--0.0030.736%
2004-07-26Richard B. Woodsv4_computers7500075000--0.0081.430%
2004-12-13Richard B. Woodsv4_computers125000125000--0.0141.852%
2019-07-04alpertronManual testing20000006000000012
skipped known factor: 586712836933923976889
---10.614%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-03-26ANONYMOUSv4_computers212590.015
2007-01-16Richard B. Woodsv4_computers212620.117


ECM factoring results:
Total ECM effort:0.404 GHz-days
Estimated T-Level:0.577
DigitsB1CompleteFacMiss
20110000.11589.102%
25500000.01198.938%


ECM Summary

B1B2factorcurvesGHz-days
10.162
50000500000030.243


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-01-05ANONYMOUSv4_computers48D6B3A5CC9A0A9A0.203
1998-01-05ANONYMOUSv4_computers48D6B3A5CC9A0A9A0.203
1998-04-11ANONYMOUSv4_computers48D6B3A5CC9A0A9A0.203
1999-07-04ANONYMOUSv4_computers48D6B3A5CC9A0A9A0.203


PRP results:
dateuseridcompidcofactorsres64
2017-10-18Oliver KruseGTX-3
586712836933923976889
7F433E68DCC61FF0
2017-12-02kkmrkkblmbrbkc4.xlarge
586712836933923976889
7F433E68DCC61FF0


CERT results:
No CERT results for M2629903


P-1 factor-bounds graph:
B1 = 2000000, B2 = 60000000 (P-1 stage 2)
B1 = 2000000 (P-1 stage 1)
B1 = 125000 (P-1 stage 1)
B1 = 75000 (P-1 stage 1)
B1 = 25000 (P-1 stage 1)
B1 = 4500, B2 = 20000 (P-1 stage 2)
B1 = 4500 (P-1 stage 1)
102
103
104
105
106
107
102
103
104
105
106
107
108
TF factor-bounds graph:
262
259
this exponent TF target: 63
TF double-checked to: 67
ECM T-Level=0.58 ~= -15-bit
250
260
270
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Last modified: 2024-03-13T02:15:48+00:00