is 2 2637799 - 1
has 794057 decimal digits
takes 0.204 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LB9B32B391D21682Edouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26711.264767.1642 %2000000600000000.57797.6893 %11.842569.6890 %
Target2630.605165.0794 %1300010000000.00751.5733 %0.612565.6288 %
Difference+4+10.6596+2.0848 %+1987000+59000000+0.5704+6.1160%+11.2300+4.0602 %

Known prime factors (1 factor, 63.3 bits, 0.00239939% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
2637799112853564025434462872063.2912139161551457
73 × 4339 × 1437341
2011-01-20433914373411.22640.00920.0164

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2003-10-31ANONYMOUSv4_computers2048204800--0.0010.671%
2009-06-21USAFSSP4_260030000420000--0.0062.402%
2011-01-20James Heinrichi7-9202063.2910.0450.000%
2019-07-04alpertronManual testing20000006000000012
skipped known factor: 11285356402543446287
---10.617%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-03-26ANONYMOUSv4_computers212590.015
2022-03-11LordJuliusManual testing21260
2009-01-31Sturle Sundefigaro.ifi2602610.058


ECM factoring results:
Total ECM effort:0.485 GHz-days
Estimated T-Level:1.154
DigitsB1CompleteFacMiss
20110000.23179.392%
25500000.02197.887%
302500000.00199.865%


ECM Summary

B1B2factorcurvesGHz-days
50000500000060.485


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-04-13ANONYMOUSv4_computersB9B32B391D21682E0.204


PRP results:
dateuseridcompidcofactorsres64
2017-10-18Oliver KruseGTX-0
11285356402543446287
C5C02EC93458ACCA
2017-12-03kkmrkkblmbrbkc4.xlarge
11285356402543446287
C5C02EC93458ACCA


CERT results:
No CERT results for M2637799


P-1 factor-bounds graph:
B1 = 2000000, B2 = 60000000 (P-1 stage 2)
B1 = 2000000 (P-1 stage 1)
B1 = 30000, B2 = 420000 (P-1 stage 2)
B1 = 30000 (P-1 stage 1)
B1 = 2048, B2 = 204800 (P-1 stage 2)
B1 = 2048 (P-1 stage 1)
102
103
104
105
106
107
102
103
104
105
106
107
108
TF factor-bounds graph:
261
260
259
this exponent TF target: 63
TF double-checked to: 67
ECM T-Level=1.15 ~= -13-bit
250
260
270
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Last modified: 2024-03-13T02:15:48+00:00