is 2 6944089 - 1
has 2090380 decimal digits
takes 1.514 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LD7BB0FD3220D30BAdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual272137.719168.0556%20000002588493605.05696.9803%142.776070.2854%2.2298%
PrimeNet2630.229863.4921%280007000000.02043.1618%0.250364.6464%1.1543%
GPU722674.279065.6716%450009000000.02902.2376%4.308066.4398%0.7681%
Difference+5+133.4401+2.3839%+1955000+257949360+5.0280+4.7427%+138.4681+3.8456%+1.4617%

Known prime factors:
No known factors for M6944089

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2001-09-10T00:00:00ANONYMOUSv4_computers30000270000---0.014--0.705%
2001-12-08T00:00:00ANONYMOUSv4_computers3000030000---0.009--0.234%
2011-11-28T21:17:00James HeinrichQ66001300002827500---0.088--2.015%
2020-01-19T06:03:38takahashivaio6000001200000012---0.386--3.583%
2021-12-06T21:50:16Seth_TrManual testing2000000258849360---5.057--6.980%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-07-21T00:00:00ANONYMOUSv4_computers21262--0.088--
2001-12-08T00:00:00ANONYMOUSv4_computers21263--0.230--
2014-02-09T10:11:00NesowaManual testing263264--0.283--
2014-02-16T12:44:00lycornManual testing264265--0.538--
2015-06-26T13:39:00VictordeHollanderManual testing265266--1.076--
2016-04-05T22:46:25Gordon SpenceManual testing266267--2.152--
2018-02-24T12:10:06-Anonymous-Manual testing267268--4.305--
2020-04-24T07:21:03TJAOIManual testing268269--8.609--
2021-07-28T22:40:47takahashiManual testing269270--17.22--
2021-08-11T16:27:33SRBaseManual testing270271--34.44--
2021-10-10T08:39:27SRBaseManual testing271272--68.87--


ECM factoring results:
Total ECM effort:1.989 GHz-days
Estimated T-Level:1.154
DigitsB1CompleteFacMiss
20110000.23179.392%
25500000.02197.887%
302500000.00199.865%


ECM Summary

B1B2factorcurvesGHz-days
50000500000061.989


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-05-23T00:00:00ANONYMOUSv4_computersD7BB0FD3220D30BA1.514
2002-02-24T00:00:00ANONYMOUSv4_computersD7BB0FD3220D30BA1.514


PRP results:
No PRP results for M6944089


P-1 factor-bounds graph:
B1 = 2000000, B2 = 258849360 (P-1 stage 2)
B1 = 2000000 (P-1 stage 1)
B1 = 600000, B2 = 12000000 (P-1 stage 2)
B1 = 600000 (P-1 stage 1)
B1 = 130000, B2 = 2827500 (P-1 stage 2)
B1 = 130000 (P-1 stage 1)
B1 = 30000, B2 = 270000 (P-1 stage 2)
B1 = 30000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2021-12-06T21:50:16+00:00