is 2 2596637 - 1
has 781666 decimal digits
takes 0.180 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
Actual26711.443267.1642 %2000000600000000.51907.6769 %11.962269.6850 %
Target2630.614665.0794 %1200010000000.00661.5299 %0.621365.6136 %
Difference+4+10.8286+2.0848 %+1988000+59000000+0.5123+6.1470%+11.3409+4.0713 %

Known prime factors (2 factors, 117.6 bits, 0.00452768% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
259663732561827991031.601627
3 × 11 × 19
-11191.251e-101.150e-62.252e-6
2596637756212183961337924154832012685.96714561376579809536800
25 × 3 × 52 × 192 × 881 × 4211 × 4530257
2019-01-30421145302575,290,6810.02520.0464

1 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2019-01-31alpertronlaptop22000000600000001222685.9670.51910.602%


Trial Factoring results:
5758596061626364656667
No TF results for M2596637


ECM factoring results:
Total ECM effort:0.277 GHz-days
Estimated T-Level:0.577
DigitsB1CompleteFacMiss
20110000.11589.102%
25500000.01198.938%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.277


Lucas-Lehmer results:
No L-L results for M2596637


PRP results:
dateuseridcompidcofactorsres64
2017-10-15Oliver KruseGTX-3
3256182799
F54733407DC2CC81
2017-12-02storm55107700_Kaby_Lake
3256182799
F54733407DC2CC81
2019-01-31treborLaptop
3256182799
75621218396133792415483201
F54733407DC2CC81


CERT results:
No CERT results for M2596637


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
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290
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Last modified: 2024-03-13T02:15:48+00:00