is 2 1086047 - 1
has 326933 decimal digits
takes 0.032 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L8E7B2075C4CB0D0Ddouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26727.359768.6567 %80000002019501792047.611215.5732 %74.970973.5379 %
Target2600.141465.0000 %45001000000.00040.6535 %0.141865.2287 %
Difference+7+27.2183+3.6567 %+7995500+20194917920+47.6107+14.9197%+74.8290+8.3091 %

Known prime factors (1 factor, 75.3 bits, 0.00693361% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1086047465831513113772357959692375.30221446194921295872
212 × 7 × 13 × 432 × 31118023
2012-02-044096311180237,216.50.07300.1361

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2011-12-31bcp19Toshiba-740Q2000001000000012--0.0327.846%
2012-02-04bcp19Toshiba-740Q2375.3020.2420.000%
2024-03-16cramsey87Comp1800000020195017920
skipped known factor: 46583151311377235795969
--49.2623.409%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-07-04ANONYMOUSv4_computers212560.009
2001-11-24ANONYMOUSv4_computers212570.018
2022-03-07firejugglerManual testing257260
2022-03-07LordJuliusManual testing257260
2009-02-17Sturle Sundegimba.ifi2602610.141
2010-11-17Michael CManual testing2612620.283
2022-04-12LordJuliusManual testing21264


ECM factoring results:
Total ECM effort:17.472 GHz-days
Estimated T-Level:25.658
DigitsB1CompleteFacMiss
201100014.8080.000%
25500001.62019.795%
302500000.13287.678%
3510000000.00999.129%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002819.74
25000025000000447.731


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2002-03-16ANONYMOUSv4_computers8E7B2075C4CB0D0D0.032


PRP results:
dateuseridcompidcofactorsres64
2017-09-29Oliver KruseGTX-2
46583151311377235795969
2DC2C363C0931C11
2017-10-18kkmrkkblmbrbkc4.xlarge
46583151311377235795969
2DC2C363C0931C11


CERT results:
No CERT results for M1086047


P-1 factor-bounds graph:
B1 = 8000000, B2 = 20195017920 (P-1 stage 2)
B1 = 8000000 (P-1 stage 1)
B1 = 200000, B2 = 10000000 (P-1 stage 2)
B1 = 200000 (P-1 stage 1)
102
103
104
105
106
107
102
103
104
105
106
107
108
109
1010
1011
TF factor-bounds graph:
264
262
261
260
257
256
this exponent TF target: 60
TF double-checked to: 67
ECM T-Level=25.66 ~= 69-bit
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260
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Last modified: 2024-03-16T09:50:51+00:00