is 2 1169873 - 1
has 352167 decimal digits
takes 0.036 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L75FC9B55D17099DEdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26725.399368.6567 %327683276800.00221.1369 %25.401469.0130 %
Target2600.131365.0000 %50001400000.00050.7981 %0.131865.2793 %
Difference+7+25.2680+3.6567 %+27768+187680+0.0016+0.3387%+25.2696+3.7337 %

Known prime factors (1 factor, 65.1 bits, 0.00556443% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1169873394528780032621087532065.09716862034598312
23 × 17 × 79 × 1569437323
2011-11-2679156943732310.0413.80227.1015

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2002-05-05Jossv4_computers10001000--4.45000e-50.039%
2002-08-10Jossv4_computers40004000--0.0000.226%
2002-08-10Jossv4_computers20002000--8.89000e-50.103%
2002-08-10Jossv4_computers30003000--0.0000.166%
2002-08-17Jossv4_computers50005000--0.0000.283%
2002-08-24Jossv4_computers32768327680--0.0022.952%
2002-08-24Jossv4_computers70007000--0.0000.385%
2002-08-24Jossv4_computers60006000--0.0000.336%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-07-27ANONYMOUSv4_computers212560.008
2001-11-10ANONYMOUSv4_computers212570.016
2003-05-04ANONYMOUSv4_computers212580.033
2022-03-07LordJuliusManual testing258260
2009-02-14Sturle Sundegolli.ifi2602610.131
2022-04-12LordJuliusManual testing21264


ECM factoring results:
Total ECM effort:18.873 GHz-days
Estimated T-Level:25.656
DigitsB1CompleteFacMiss
201100014.7690.000%
25500001.61619.866%
302500000.13187.697%
3510000000.00999.130%


ECM Summary

B1B2factorcurvesGHz-days
10.038
50000500000028010.48
25000025000000448.353


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2004-11-03ANONYMOUSv4_computers75FC9B55D17099DE0.036


PRP results:
dateuseridcompidcofactorsres64
2017-09-29Oliver KruseGTX-3
39452878003262108753
BD88D87D26A2914A
2017-10-17Oliver KruseThreadripper-PC
39452878003262108753
BD88D87D26A2914A
2018-01-06ATHec2-1xh
39452878003262108753
BD88D87D26A2914A


CERT results:
No CERT results for M1169873


P-1 factor-bounds graph:
B1 = 32768, B2 = 327680 (P-1 stage 2)
B1 = 32768 (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
100
101
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
264
261
260
258
257
256
this exponent TF target: 60
TF double-checked to: 67
ECM T-Level=25.66 ~= 69-bit
250
260
270
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Last modified: 2024-03-13T02:15:48+00:00