is 2 1147417 - 1
has 345407 decimal digits
takes 0.034 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LB312B736199828DDdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26725.896468.6567 %1220000353800000.13246.1689 %26.028870.5902 %
Target2600.133965.0000 %50001300000.00050.7704 %0.134465.2696 %
Difference+7+25.7625+3.6567 %+1215000+35250000+0.1319+5.3985%+25.8944+5.3206 %

Known prime factors (2 factors, 164.0 bits, 0.01429676% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
114741749262438285833926172492272.0612146666743033872
24 × 71 × 1889671428727
2018-05-04711889671428727833.474,424.68,263.9
114741748921250919527983931905842332891.9832131799115732466223348
22 × 3389 × 157258713169996033
2015-03-033389157258713169996033437,057,388368,216,909687,726,644

1 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2002-05-05Jossv4_computers20002000--8.60000e-50.102%
2002-05-05Jossv4_computers30003000--0.0000.166%
2002-05-05Jossv4_computers10001000--4.30000e-50.038%
2002-05-11Jossv4_computers40004000--0.0000.225%
2002-05-11Jossv4_computers50005000--0.0000.281%
2002-08-10Jossv4_computers1000010000--0.0000.518%
2002-08-10Jossv4_computers90009000--0.0000.475%
2002-08-10Jossv4_computers80008000--0.0000.430%
2002-08-10Jossv4_computers70007000--0.0000.383%
2002-08-10Jossv4_computers60006000--0.0000.334%
2003-09-21Xyzzyv4_computers1000010000006--0.0032.862%
2003-09-21Team Prime Ribv4_computers1000010000006--0.0032.862%
2013-10-01David Campeaui5-2500k12200003538000012--0.13711.175%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2001-11-14ANONYMOUSv4_computers212570.017
2003-04-27ANONYMOUSv4_computers212580.033
2022-03-07LordJuliusManual testing258260
2009-04-15Sturle Sundekraus.ifi2602610.134
2012-08-30AxelssonManual testing2612620.268
2012-12-01dbaughManual testing2622630.856
2014-12-28Matthias WurtingerManual testing2632641.711
2015-01-12lycornManual testing2642653.256


ECM factoring results:
Total ECM effort:19.344 GHz-days
Estimated T-Level:25.699
DigitsB1CompleteFacMiss
201100015.2080.000%
25500001.68818.498%
302500000.14086.948%
3510000000.00999.061%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002358.190
500005000000431.523
50000500000030.106
25000040000000449.52


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2004-06-12ANONYMOUSv4_computersB312B736199828DD0.034


PRP results:
dateuseridcompidcofactorsres64
2017-09-29Oliver KruseGTX-0
4892125091952798393190584233
067C3D3041189EB6
2017-10-17Oliver KruseThreadripper-PC
4892125091952798393190584233
067C3D3041189EB6
2018-01-06ATHec2-1xh
4892125091952798393190584233
067C3D3041189EB6
2018-05-06Oliver KruseGTX-5
4926243828583392617249
4892125091952798393190584233
C38D9EB74FA0AA8F
2018-05-06ATHec2-PRPCFDC
4926243828583392617249
4892125091952798393190584233
C38D9EB74FA0AA8F


CERT results:
No CERT results for M1147417


P-1 factor-bounds graph:
B1 = 1220000, B2 = 35380000 (P-1 stage 2)
B1 = 1220000 (P-1 stage 1)
B1 = 10000, B2 = 1000000 (P-1 stage 2)
B1 = 10000 (P-1 stage 1)
B1 = 9000 (P-1 stage 1)
B1 = 8000 (P-1 stage 1)
B1 = 7000 (P-1 stage 1)
B1 = 6000 (P-1 stage 1)
B1 = 5000 (P-1 stage 1)
B1 = 4000 (P-1 stage 1)
B1 = 3000 (P-1 stage 1)
B1 = 2000 (P-1 stage 1)
B1 = 1000 (P-1 stage 1)
100
101
102
103
104
105
106
107
100
101
102
103
104
105
106
107
108
109
1010
1011
1012
1013
1014
1015
1016
1017
1018
TF factor-bounds graph:
265
264
263
262
261
260
258
257
this exponent TF target: 60
TF double-checked to: 67
ECM T-Level=25.7 ~= 69-bit
250
260
270
280
290
2100
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Last modified: 2024-02-09T03:30:02+00:00