is 2 2940781 - 1
has 885264 decimal digits
takes 0.250 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- L-L tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26710.104167.1642%----10.104167.1642%0.0000%
PrimeNet2590.026162.7119%130002600000.00333.0719%0.029463.8573%1.1455%
GPU722630.542765.0794%170003000000.00401.9465%0.546765.7591%0.6797%
Difference+4+9.5614+2.0848%-17000-300000-0.0040-1.9465%+9.5574+1.4051%+1.4051%

Known prime factors (4 factors, 210.8 bits, 0.00716878% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
2940781794010871929.565135
33 × 5
-27272.503e-113.332e-66.781e-6
29407813549875560731238.36960356
22 × 79 × 191
2008-09-07791911.325e-81.050e-51.984e-5
294078114597754804286491650.375248195204
22 × 263 × 235927
2014-05-272632359279.719e-50.00160.0030
294078170511522592813365521008453132892.5101198857082401126869376
27 × 3 × 673 × 13763 × 25339 × 13302049
2021-07-182533913302049503,169,9130.09240.1670

11 Composite Factors:
exponentprime factorscomposite factordigitsbits*
29407812818639785916840695832167.934
294078111590776006795950458432792579.939
29407815182021302126555509631353772788.744
294078141145812476420604924322400958268336736118.308
2940781559869154694559186977772906681139762337122.075
2940781250307130802089409397128331149928673584940130.879
29407811029309917686796688517324210691180048257213744142.885
2940781198746582945677940575289451115131297701021141447949160.443
294078181728326427143174384955629512029138213453228197013
27
52172.449
294078136539221212133675391679434347465574346724649425549
38001
55181.254
294078129012538860307935366178653819018457329558094887550
11287525008871
64210.818
P-1 results:
Exponent "2940781" not found


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2021-07-18T00:04:19ATHec2-P_1100000010000000027P-12892.5100.762


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-09-07T19:42:00Will EdgingtonManual testing??38.369127.97794e-100.5351.70498e-9
2014-05-27T11:28:00TJAOIManual testing??50.375164.61903e-50.5359.86955e-5


ECM factoring results:

Old Calculation Method

Total ECM effort:0.347 GHz-days
Estimated T-Level:0.150
DigitsB1CurvesCompleteFacMiss
20110003 / 1000.03097.030%
25500003 / 2800.01198.932%

New Calculation Method

Total ECM effort:0.347 GHz-days
Estimated T-Level:0.150
DigitsB1CompleteFacMiss
20110000.09790.776%
25500000.00999.129%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.347


Lucas-Lehmer results:
Exponent "2940781" not found


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-25T12:36:12Oliver KruseGTX-2
794010871
354987556073
1459775480428649
4914731ACE386A__no
2017-12-09T09:31:10kkmrkkblmbrbkc4.xlarge
794010871
354987556073
1459775480428649
4914731ACE386A__no
2021-07-18T05:12:37GURA LOVE
794010871
354987556073
1459775480428649
7051152259281336552100845313
4914731ACE386A48no


P-1 factor-bounds graph:
B1 = 1000000, B2 = 100000000 (P-1 stage 2)
B1 = 1000000 (P-1 stage 1)
100
101
102
103
104
105
106
100
101
102
103
104
105
106
107
108
TF factor-bounds graph:
267
2
220
230
240
250
260
270
280
290
2100
Last modified: 2021-07-18T05:12:37+00:00