is 2 1074607 - 1
has 323489 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-L91DAE9076FC25B2Ddouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26727.651068.6567 %9000001065926400.28627.0764 %27.937170.8747 %
Target2600.142965.0000 %45001000000.00040.6518 %0.143365.2281 %
Difference+7+27.5080+3.6567 %+895500+106492640+0.2857+6.4246%+27.7938+5.6466 %

Known prime factors (2 factors, 132.2 bits, 0.01230015% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1074607480761331749221347192065.38222369169926737
32 × 61 × 40745300413
2017-02-2461407453004136.789295.404178.19
10746071281437585765780068332166.79659623545434088
23 × 3 × 6277 × 395780531
2008-03-19627739578053113.7430.92701.7308

1 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2002-02-17Jossv4_computers10000152500--0.0011.772%
2024-02-20USAFSSUSAFSACS900000106592640--0.29612.638%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2001-11-24ANONYMOUSv4_computers212570.018
2022-04-12LordJuliusManual testing21261
2022-04-12LordJuliusManual testing261262
2022-04-12LordJuliusManual testing262263
2022-04-12LordJuliusManual testing263264


ECM factoring results:
Total ECM effort:18.696 GHz-days
Estimated T-Level:25.685
DigitsB1CompleteFacMiss
201100015.1310.000%
25500001.66019.022%
302500000.13787.201%
3510000000.00999.078%


ECM Summary

B1B2factorcurvesGHz-days
10.056
5000050000002237.818
500005000000561.965
25000035000000448.856


Lucas-Lehmer results:
No L-L results for M1074607


PRP results:
dateuseridcompidcofactorsres64
2017-09-28Oliver KruseGTX-3
128143758576578006833
48076133174922134719
C085848E735AB7BE
2017-10-05Oliver KruseManual testing
128143758576578006833
48076133174922134719
C085848E735AB7BE
2017-10-16Oliver KruseThreadripper-PC
48076133174922134719
128143758576578006833
C085848E735AB7BE
2018-01-01ATHec2-1xh
48076133174922134719
128143758576578006833
C085848E735AB7BE


CERT results:
No CERT results for M1074607


P-1 factor-bounds graph:
B1 = 900000, B2 = 106592640 (P-1 stage 2)
B1 = 900000 (P-1 stage 1)
B1 = 10000, B2 = 152500 (P-1 stage 2)
B1 = 10000 (P-1 stage 1)
100
101
102
103
104
105
106
100
101
102
103
104
105
106
107
108
109
1010
1011
TF factor-bounds graph:
264
263
262
261
257
this exponent TF target: 60
TF double-checked to: 67
ECM T-Level=25.68 ~= 69-bit
250
260
270
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Last modified: 2024-02-20T05:46:04+00:00