is 2 10149583 - 1
has 3055329 decimal digits
takes 2.960 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LA66A99E072EC8EE5double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2685.872664.7059 %12000019200000.09223.0527 %5.964965.7833 %
Target2685.872664.7059 %7000080000000.21232.6530 %6.085065.6422 %
Difference---+50000-6080000-0.1201+0.3997%-0.1201+0.1411 %

Known prime factors (1 factor, 70.1 bits, 0.00069107% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1014958313014619814401918314412270.14164114061702840
23 × 5 × 929 × 1725351499
2016-07-21929172535149923.54339.75574.251

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2000-07-12ANONYMOUSv4_computers1200001920000--0.0923.053%
2001-01-21ANONYMOUSv4_computers1100001072500--0.0692.605%
2001-09-10DSheetsv4_computers1150001495000--0.0802.855%


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2021-08-01ATHec2-P_12500001075000027--0.398


Trial Factoring results:
575859606162636465666768
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-08-16Robert Walkerv4_computers212640.193
2011-12-06David CampeauManual testing2642650.368
2015-04-25ThaManual testing2652660.736
2015-11-18VictordeHollanderManual testing2662671.473
2022-02-06ViliamFManual testing267268


ECM factoring results:
Total ECM effort:0.887 GHz-days
Estimated T-Level:0.385
DigitsB1CompleteFacMiss
20110000.07792.596%
25500000.00799.291%


ECM Summary

B1B2factorcurvesGHz-days
50000500000010.444
50000500000010.444


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2001-10-06DSheetsv4_computersA66A99E072EC8EE52.960
2004-08-06ANONYMOUSv4_computersA66A99E072EC8EE52.960


PRP results:
dateuseridcompidcofactorsres64
2020-01-28Team_InspectorSpudBoy4
1301461981440191831441
2887BCCA76CF20E6
2021-02-03Richard Thomasdjinn.pc
1301461981440191831441
2887BCCA76CF20E6


CERT results:
dateuseridcompid
2021-02-03curtiscwcm231--31l


P-1 factor-bounds graph:
B1 = 120000, B2 = 1920000 (P-1 stage 2)
B1 = 115000, B2 = 1495000 (P-1 stage 2)
B1 = 110000, B2 = 1072500 (P-1 stage 2)
B1 = 120000 (P-1 stage 1)
B1 = 115000 (P-1 stage 1)
B1 = 110000 (P-1 stage 1)
101
102
103
104
105
106
101
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
268
267
266
265
264
this exponent TF target: 68
TF double-checked to: 67
ECM T-Level=0.38 ~= -15-bit
250
260
270
280
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Last modified: 2024-02-09T03:30:02+00:00