is 2 1172533 - 1
has 352968 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-L0C828A53697B2131double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26725.341668.6567 %3000002342425800.58016.8570 %25.921870.8059 %
Target2600.131065.0000 %50001400000.00050.7986 %0.131565.2795 %
Difference+7+25.2107+3.6567 %+295000+234102580+0.5796+6.0585%+25.7902+5.5264 %

Known prime factors (1 factor, 81.8 bits, 0.00697988% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
117253343320975059908720277721912581.8411847324342253425715
32 × 5 × 1084939 × 37837751293
2011-11-29108493937837751293722,78891.714171.21

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2002-05-05Jossv4_computers10001000--4.45000e-50.039%
2002-08-17Jossv4_computers40004000--0.0000.227%
2002-08-17Jossv4_computers30003000--0.0000.167%
2002-08-17Jossv4_computers20002000--8.89000e-50.103%
2002-08-24Jossv4_computers3276832768--0.0011.189%
2002-08-24Jossv4_computers50005000--0.0000.283%
2002-08-24Jossv4_computers60006000--0.0000.336%
2024-03-12USAFSS6917th_Scty_Sq300000234242580--0.58012.670%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2001-11-04ANONYMOUSv4_computers212570.016
2003-05-11ANONYMOUSv4_computers212580.033
2022-03-07LordJuliusManual testing258260
2009-02-18Sturle Sundegolli.ifi2602610.131
2022-04-12LordJuliusManual testing21264


ECM factoring results:
Total ECM effort:18.879 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
50000500000028010.49
25000025000000448.356


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2004-11-03ANONYMOUSv4_computers0C828A53697B21310.036


PRP results:
dateuseridcompidcofactorsres64
2017-09-29Oliver KruseGTX-0
4332097505990872027772191
7A850FE493BFCC3A
2017-10-17Oliver KruseThreadripper-PC
4332097505990872027772191
7A850FE493BFCC3A
2018-01-06ATHec2-1xh
4332097505990872027772191
7A850FE493BFCC3A


CERT results:
No CERT results for M1172533


P-1 factor-bounds graph:
B1 = 300000, B2 = 234242580 (P-1 stage 2)
B1 = 300000 (P-1 stage 1)
B1 = 32768 (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)
102
103
104
105
106
107
102
103
104
105
106
107
108
109
1010
1011
TF factor-bounds graph:
264
261
260
258
257
this exponent TF target: 60
TF double-checked to: 67
ECM T-Level=25.66 ~= 69-bit
250
260
270
280
290
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Last modified: 2024-03-13T02:15:48+00:00