is 2 11155777 - 1
has 3358224 decimal digits
takes 3.774 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L310AB092C55A167Ddouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual27142.854866.1972 %61891071856732107.83368.2992 %50.688469.0025 %
Target2685.343064.7059 %8000095000000.29102.8752 %5.634065.7207 %
Difference+3+37.5118+1.4913 %+6109107+176173210+7.5426+5.4240%+45.0544+3.2819 %

Known prime factors (1 factor, 90.9 bits, 0.00081484% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1115577723127990071700605219449980312890.902103659252384215842695
32 × 5 × 17 × 5189 × 1162507 × 22462981
2021-08-0811625072246298140,063,7461.13961.1607

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2001-01-21ANONYMOUSv4_computers115000833750--0.0762.485%
2018-03-18ThaManual testing30000060000006--0.3414.515%
2021-08-08LaurVManual testing618910718567321022890.9028.91410.376%


Trial Factoring results:
575859606162636465666768697071
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-12-01Team_Deutschlandv4_computers212640.176
2013-11-25lycornManual testing2642650.335
2015-02-06NumberwangManual testing2652660.670
2015-12-28VictordeHollanderManual testing2662671.340
2017-12-27ramgeisManual testing2672698.038
2021-08-06SRBaseManual testing26927010.72
2021-08-14SRBaseManual testing270271


ECM factoring results:
Total ECM effort:1.029 GHz-days
Estimated T-Level:0.385
DigitsB1CompleteFacMiss
20110000.07792.596%
25500000.00799.291%


ECM Summary

B1B2factorcurvesGHz-days
50000500000021.029


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2001-02-18ANONYMOUSv4_computers310AB092C55A167D3.774
2004-04-29Team Prime Ribv4_computers310AB092C55A167D3.774


PRP results:
dateuseridcompidcofactorsres64
2021-08-10LaurVdebi
2312799007170060521944998031
D27BDBA97591D4AE


CERT results:
dateuseridcompid
2021-08-10Ben Deloi-045212ad5647f9ffc


P-1 factor-bounds graph:
B1 = 6189107, B2 = 185673210 (P-1 stage 2)
B1 = 6189107 (P-1 stage 1)
B1 = 300000, B2 = 6000000 (P-1 stage 2)
B1 = 300000 (P-1 stage 1)
B1 = 115000, B2 = 833750 (P-1 stage 2)
B1 = 115000 (P-1 stage 1)
104
105
106
107
104
105
106
107
108
109
TF factor-bounds graph:
271
270
269
267
266
265
264
this exponent TF target: 68
TF double-checked to: 67
ECM T-Level=0.38 ~= -15-bit
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2100
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Last modified: 2024-03-13T02:15:48+00:00