is 2 2675203 - 1
has 805317 decimal digits
takes 0.207 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26711.107267.1642 %2000000600000000.57797.7004 %11.685069.6927 %
Target2630.596665.0794 %1300011000000.00811.6217 %0.604765.6457 %
Difference+4+10.5106+2.0848 %+1987000+58900000+0.5698+6.0787%+11.0804+4.0470 %

Known prime factors (4 factors, 202.5 bits, 0.00757123% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
2675203363827609928.43968
22 × 17
-4171.356e-115.273e-79.117e-7
2675203385229233928.52172
23 × 32
2008-09-07991.358e-111.008e-62.051e-6
2675203338466791837503823512064.8766326002023725
52 × 677 × 691 × 540907
2018-02-156915409071.74920.00340.0062
267520319778257735373801845150492580.710369659007846765308
22 × 7 × 14159 × 16561 × 56302039
2019-05-191656156302039147,5610.34530.6416

11 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2019-05-19alpertronlaptop22000000600000001222580.7100.56310.631%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2008-09-07Will EdgingtonManual testing??
28.521
9
2018-02-15TJAOIManual testing264265*
64.876
20
1.223


ECM factoring results:
Total ECM effort:0.310 GHz-days
Estimated T-Level:0.577
DigitsB1CompleteFacMiss
20110000.11589.102%
25500000.01198.938%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.310


Lucas-Lehmer results:
No L-L results for M2675203


PRP results:
dateuseridcompidcofactorsres64
2017-10-18Oliver KruseGTX-0
363827609
385229233
6C350191A13439B4
2017-12-03kkmrkkblmbrbkc4.xlarge
363827609
385229233
6C350191A13439B4
2018-02-17NetaniasWin10
363827609
385229233
33846679183750382351
6C350191A13439B4
2018-02-17AdolfNorManual testing
363827609
385229233
33846679183750382351
6C350191A13439B4
2019-05-24vnatinVIR7-1263
363827609
385229233
33846679183750382351
1977825773537380184515049
6C350191A13439B4


CERT results:
No CERT results for M2675203


P-1 factor-bounds graph:
B1 = 2000000, B2 = 60000000 (P-1 stage 2)
B1 = 2000000 (P-1 stage 1)
100
101
102
103
104
105
106
107
100
101
102
103
104
105
106
107
108
TF factor-bounds graph:
this exponent TF target: 63
TF double-checked to: 67
ECM T-Level=0.58 ~= -15-bit
250
260
270
280
290
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Last modified: 2024-03-13T02:15:48+00:00