is 2 5379607 - 1
has 1619424 decimal digits
takes 0.850 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LC51E0E3C67D4AD4Bdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26811.079866.1765 %32000095200000.18804.5496 %11.267867.7153 %
Target2662.745365.1515 %3200032500000.04752.0741 %2.792765.8743 %
Difference+2+8.3345+1.0250 %+288000+6270000+0.1406+2.4754%+8.4751+1.8410 %

Known prime factors (1 factor, 68.5 bits, 0.00127268% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
53796074073834277088132677112168.46537863679234265
5 × 103 × 39761 × 1849091
2019-07-1939761184909120.6170.03170.0431

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2000-06-11ANONYMOUSv4_computers2000020000--0.0050.444%
2009-11-20USAFSSP4_26006000010200006--0.0292.667%
2019-07-19USAFSS6917th_Scty_Sq32000095200001222168.4650.1885.548%


Trial Factoring results:
575859606162636465666768
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1998-03-17ANONYMOUSv4_computers212610.029
1998-04-21ANONYMOUSv4_computers212620.057
2009-05-19GrunwalderGIMPManual testing2622630.182
2014-12-24VictordeHollanderManual testing2632651.060
2015-08-19snme2pm1Manual testing2652661.389
2016-08-12Gordon SpenceManual testing2662672.778
2018-06-19ramgeisManual testing2672685.556


ECM factoring results:
Total ECM effort:2.249 GHz-days
Estimated T-Level:1.731
DigitsB1CompleteFacMiss
20110000.34670.740%
25500000.03296.848%
302500000.00299.798%


ECM Summary

B1B2factorcurvesGHz-days
50000500000092.249


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-07-21ANONYMOUSv4_computersC51E0E3C67D4AD4B0.850
1998-08-30ANONYMOUSv4_computersC51E0E3C67D4AD4B0.850
2000-08-10ANONYMOUSv4_computersC51E0E3C67D4AD4B0.850


PRP results:
dateuseridcompidcofactorsres64
2019-07-20Niels_Mache_NextcloudSuperDry-X
407383427708813267711
2E843592FAB6EB79
2019-07-21kkmrkkblmbrbkc5.large
407383427708813267711
2E843592FAB6EB79


CERT results:
No CERT results for M5379607


P-1 factor-bounds graph:
B1 = 320000, B2 = 9520000 (P-1 stage 2)
B1 = 320000 (P-1 stage 1)
B1 = 60000, B2 = 1020000 (P-1 stage 2)
B1 = 60000 (P-1 stage 1)
B1 = 20000 (P-1 stage 1)
103
104
105
106
103
104
105
106
107
TF factor-bounds graph:
268
267
266
265
263
262
261
this exponent TF target: 66
TF double-checked to: 67
ECM T-Level=1.73 ~= -11-bit
250
260
270
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Last modified: 2024-03-13T02:15:48+00:00