is 2 1145143 - 1
has 344723 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-LEC38FD355C534B63double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26725.947868.6567 %300000100000000.03564.1362 %25.983469.9531 %
Target2600.134165.0000 %50001300000.00050.7700 %0.134665.2695 %
Difference+7+25.8137+3.6567 %+295000+9870000+0.0351+3.3662%+25.8488+4.6836 %

Known prime factors (2 factors, 152.9 bits, 0.01334777% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
114514372972686025199392582972272.6283186182250828036
22 × 34 × 31 × 157051 × 2019869
2008-06-081570512019869835.120.01110.0137
114514314112425649903903670523992580.223616186172814395393
7 × 15923 × 5528267042413
2017-07-14159235528267042413213,83112,94424,176

1 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2002-05-05Jossv4_computers40004000--0.0000.225%
2002-05-05Jossv4_computers10001000--4.30000e-50.038%
2002-05-05Jossv4_computers30003000--0.0000.165%
2002-05-05Jossv4_computers20002000--8.60000e-50.102%
2002-05-11Jossv4_computers50005000--0.0000.281%
2002-06-02ANONYMOUSv4_computers500001000000--0.0044.175%
2016-03-17alpertronManual testing3000001000000012
skipped known factor: 7297268602519939258297
---8.234%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2001-11-14ANONYMOUSv4_computers212570.017
2003-04-27ANONYMOUSv4_computers212580.034


ECM factoring results:
Total ECM effort:18.868 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
5000050000002729.62
50000500000070.248
25000035000000448.943


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2002-07-06ANONYMOUSv4_computersEC38FD355C534B630.034


PRP results:
dateuseridcompidcofactorsres64
2017-09-28alpertronManual testing
1411242564990390367052399
7297268602519939258297
21405CB28E154197
2017-10-17Oliver KruseThreadripper-PC
7297268602519939258297
1411242564990390367052399
21405CB28E154197


CERT results:
No CERT results for M1145143


P-1 factor-bounds graph:
B1 = 300000, B2 = 10000000 (P-1 stage 2)
B1 = 300000 (P-1 stage 1)
B1 = 50000, B2 = 1000000 (P-1 stage 2)
B1 = 50000 (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
102
103
104
105
106
107
108
109
1010
1011
1012
1013
TF factor-bounds graph:
258
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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290
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Last modified: 2024-03-03T02:29:32+00:00