is 2 4369777 - 1
has 1315434 decimal digits
takes 0.545 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L9EE8104506338D5Ddouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26813.640366.1765%27000078975000.12404.1728%13.764267.5879%1.4114%
PrimeNet2610.070362.2951%180003600000.00662.9340%0.076963.4013%1.1063%
GPU722651.669664.6154%240005000000.00901.9874%1.678665.3186%0.7032%
Difference+3+11.9707+1.5611%+246000+7397500+0.1150+2.1854%+12.0856+2.2692%+2.2692%

Known prime factors (1 factor, 68.2 bits, 0.00155976% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
43697773293578553188473622392168.15837685888240847
3 × 7 × 11 × 293 × 556799909
2019-07-0729355679990925.2695.486210.247

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2000-12-31T00:00:00ANONYMOUSv4_computers20000180000---0.005--0.901%
2010-08-31T10:58:00markrtiny950002113750---0.037--2.644%
2017-04-03T13:06:35Squeeky_SquirrelP4_2600270000789750012---0.124--4.173%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-07-29T00:00:00ANONYMOUSv4_computers21261--0.070--
2010-11-15T22:45:00markroldgamer261262--0.070--
2012-01-15T23:43:00GrunwalderGIMPManual testing21263--0.365--
2016-02-23T16:38:49Mark RoseManual testing262263--0.225--
2014-07-10T21:28:00JayderManual testing263264--0.449--
2014-07-11T19:23:00lycornManual testing264265--0.855--
2015-06-18T21:17:00snme2pm1Manual testing265266--1.710--
2018-05-03T02:24:24chuenkitManual testing266267--3.420--
2018-10-29T01:12:48chuenkitManual testing267268--6.840--


ECM factoring results:

Old Calculation Method

Total ECM effort:2.202 GHz-days
Estimated T-Level:0.600
DigitsB1CurvesCompleteFacMiss
201100012 / 1000.12088.638%
255000012 / 2800.04395.797%

New Calculation Method

Total ECM effort:2.202 GHz-days
Estimated T-Level:0.600
DigitsB1CompleteFacMiss
20110000.46263.031%
25500000.04395.819%
302500000.00399.731%


ECM Summary

B1B2factorcurvesGHz-days
50000500000091.652
50000500000030.551


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-10-18T00:00:00ANONYMOUSv4_computers1D3570B147192A__0.545
1999-12-08T00:00:00ANONYMOUSv4_computers9EE8104506338D5D0.545
2001-01-08T00:00:00ANONYMOUSv4_computers9EE8104506338D5D0.545


PRP results:
dateuseridcompidcofactorsres64PRP
2019-07-08T03:36:43Niels_Mache_NextcloudSuperDry3
329357855318847362239
46E4BFBE057919ECno
2019-07-10T02:42:27arnaudstm-11-010
329357855318847362239
46E4BFBE057919ECno


P-1 factor-bounds graph:
B1 = 270000, B2 = 7897500 (P-1 stage 2)
B1 = 270000 (P-1 stage 1)
B1 = 95000, B2 = 2113750 (P-1 stage 2)
B1 = 95000 (P-1 stage 1)
B1 = 20000, B2 = 180000 (P-1 stage 2)
B1 = 20000 (P-1 stage 1)
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101
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104
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109
TF factor-bounds graph:
268
267
266
265
264
263
262
261
250
260
270
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2100
Last modified: 2019-07-10T02:42:27+00:00