is 2 5067709 - 1
has 1525533 decimal digits
takes 0.702 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRPC5FDEC8B26195CCAverified PRP

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual272188.711268.0556%1500000450000000.77784.9535%189.489169.6379%1.5824%
PrimeNet2610.060662.2951%220005000000.00973.4059%0.070363.5793%1.2842%
GPU722651.439664.6154%340007000000.01412.4215%1.453865.4722%0.8568%
Difference+7+187.2716+3.4402%+1466000+44300000+0.7637+2.5320%+188.0353+4.1657%+4.1657%

Known prime factors (1 factor, 91.3 bits, 0.00180082% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
506770929658029555097595482076250572891.260292617724844674343792
24 × 19 × 241 × 2435243 × 1640090071
2021-11-1024352431640090071149,764,03118.42233.543

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2009-08-12T21:16:00harleeP4_2600600001065000---0.023--1.237%
2017-07-03T12:32:23mikrS05815000004500000012---0.778--4.953%


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2021-11-10T14:10:28ATHec2-P_125000009000000027P+12891.2601.881


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-06-01T00:00:00ANONYMOUSv4_computers21261--0.061--
2008-12-29T12:22:00Sturle Sundeantonov.ifi261262--0.061--
2009-08-08T04:05:00GrunwalderGIMPManual testing21263--0.315--
2016-02-23T16:39:08Mark RoseManual testing262263--0.194--
2014-12-14T14:43:00VictordeHollanderManual testing263264--0.387--
2014-12-14T14:43:00VictordeHollanderManual testing264265--0.737--
2015-08-02T05:19:00snme2pm1Manual testing265266--1.475--
2016-05-22T18:45:47Gordon SpenceManual testing266267--2.949--
2018-06-11T12:29:31ramgeisManual testing267268--5.898--
2021-01-25T11:17:39TJAOIManual testing268269--11.80--
2021-03-27T16:29:56-Anonymous-Manual testing269270--23.59--
2021-03-27T16:29:57-Anonymous-Manual testing270271--47.19--
2021-04-02T10:14:44-Anonymous-Manual testing271272--94.37--


ECM factoring results:

Old Calculation Method

Total ECM effort:1.897 GHz-days
Estimated T-Level:0.450
DigitsB1CurvesCompleteFacMiss
20110009 / 1000.09091.352%
25500009 / 2800.03296.831%

New Calculation Method

Total ECM effort:1.897 GHz-days
Estimated T-Level:0.450
DigitsB1CompleteFacMiss
20110000.29074.802%
25500000.02697.410%
302500000.00299.839%


ECM Summary

B1B2factorcurvesGHz-days
50000500000091.897


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-01-10T00:00:00ANONYMOUSv4_computersB1B48A1BD8D2A8__0.702
1999-11-24T00:00:00Wayne Beardsleyv4_computers8C6C5C6863C865__0.702


PRP results:
dateuseridcompidcofactorsres64PRP
2021-11-10T17:09:47ATHec2-PRPCFDC
2965802955509759548207625057
C5FDEC8B26195CCAno


P-1 factor-bounds graph:
B1 = 2500000, B2 = 90000000 (P+1 stage 2)
B1 = 1500000, B2 = 45000000 (P-1 stage 2)
B1 = 2500000 (P+1 stage 1)
B1 = 1500000 (P-1 stage 1)
B1 = 60000, B2 = 1065000 (P-1 stage 2)
B1 = 60000 (P-1 stage 1)
103
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1010
TF factor-bounds graph:
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271
270
269
268
267
266
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250
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2100
Last modified: 2021-11-10T17:09:47+00:00