is 25854361-1
has 1,762,339 decimal digits
takes 1.038 GHz-days to do one L-L test
Last-known PrimeNet details:
0 L-L tests remaining
ResidueStatus
L-L44891CACD08898B7double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26810.181366.1765%720,00011,520,0000.33625.2302%10.517571.4067%8.5035%
PrimeNet2620.104962.9032%24,000550,0000.01353.1942%0.118566.0974%3.1942%
GPU722662.522665.1515%40,000800,0000.02092.3382%2.543667.4897%2.3382%
Difference+2+7.6586+1.0250%+680,000+10,720,000+0.3153+2.8920%+7.9739+3.9170%+3.9170%

Known prime factors (1 factor, 118.2 bits, 0.00201970% known):
Remaining cofactor is not a probable-prime

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
585436139267340703663570000436994354908332936118.24133536828958500825282585917024
25 × 23 × 41 × 59 × 239 × 271 × 701 × 4507 × 67189 × 1370053
67,1891,370,0532019-12-102.792e+100.03550.0358

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2000-10-28T00:00:00ANONYMOUSv4_computers20,00020,000---0.005--0.321%
2001-01-28T00:00:00lettpv4_computers25,000243,750---0.009--1.126%
2011-04-27T04:30:00harleeP4_260065,0001,088,750---0.031--2.181%
2019-12-10T13:08:31storm5510Manual testing720,00011,520,0001236118.2410.3362.0750.6725.230%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-05-16T00:00:00Phantomasv4_computers?262--0.052--
2009-03-21T23:21:00GrunwalderGIMPManual testing262263--0.168--
2014-10-09T13:02:00NesowaManual testing263264--0.335--
2014-10-15T22:33:00lycornManual testing264265--0.638--
2015-09-15T21:24:00snme2pm1Manual testing265266--1.276--
2016-07-18T02:06:06Gordon SpenceManual testing266267--2.553--
2018-07-05T15:05:27ramgeisManual testing267268--5.106--


ECM factoring results:
ECM Summary

B1B2factorcurvesGHz-days
50,0005,000,00092.425


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-12-21T00:00:00ANONYMOUSv4_computers8B2272D11B6FE3__1.038
1999-09-14T00:00:00ANONYMOUSv4_computers44891CACD08898B71.038
2001-04-08T00:00:00lettpv4_computers44891CACD08898B71.038


PRP results:
dateuseridcompidcofactorsres64PRP
2019-12-12T23:25:31ANONYMOUSobFIV_MkQmyMzMWzFMY2
392673407036635700004369943549083329
3FD93E83189C7BC4no
2019-12-14T07:33:38GANKL-SCH01
392673407036635700004369943549083329
3FD93E83189C7BC4no


P-1 factor-bounds graph:
B1 = 720,000, B2 = 11,520,000 (stage 2)
B1 = 720,000 (stage 1)
B1 = 65,000, B2 = 1,088,750 (stage 2)
B1 = 65,000 (stage 1)
B1 = 25,000, B2 = 243,750 (stage 2)
B1 = 25,000 (stage 1)
B1 = 20,000 (stage 1)
103
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105
106
103
104
105
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107
108
TF factor-bounds graph:
268
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266
265
264
263
262
250
260
270
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290
2100
2110
2120
Last modified: 2019-12-14T07:33:38+00:00