is 2 6944269 - 1
has 2090434 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-L827D781CFF22070Edouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual272137.715568.0556%40000004568186709.06528.0808%146.780770.6369%2.5814%
PrimeNet2630.229863.4921%280007000000.02043.1618%0.250364.6464%1.1543%
GPU722674.278965.6716%450009000000.02902.2376%4.307966.4398%0.7681%
Difference+5+133.4366+2.3839%+3955000+455918670+9.0362+5.8433%+142.4728+4.1972%+1.8133%

Known prime factors:
No known factors for M6944269

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2002-04-20T00:00:00ANONYMOUSv4_computers3000030000---0.009--0.234%
2011-09-05T06:56:00Carsten Kossendeymother44000013640000---0.367--3.523%
2021-11-12T14:51:06Seth_TrManual testing30000007500000012---2.189--5.984%
2021-12-02T23:04:23Seth_TrManual testing4000000456818670---9.065--8.081%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-07-21T00:00:00ANONYMOUSv4_computers21262--0.088--
2005-03-20T00:00:00ANONYMOUSv4_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--
2018-02-24T18:55:34-Anonymous-Manual testing267268--4.304--
2020-04-24T07:21:03TJAOIManual testing268269--8.609--
2021-07-28T22:40:47takahashiManual testing269270--17.22--
2021-08-11T16:43:43SRBaseManual testing270271--34.44--
2021-09-25T07:21:29SRBaseManual 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)
1999-07-12T00:00:00Ethan O'Connorv4_computers827D781CFF22070E1.514
2002-05-18T00:00:00ANONYMOUSv4_computers827D781CFF22070E1.514


PRP results:
No PRP results for M6944269


P-1 factor-bounds graph:
B1 = 4000000, B2 = 456818670 (P-1 stage 2)
B1 = 3000000, B2 = 75000000 (P-1 stage 2)
B1 = 4000000 (P-1 stage 1)
B1 = 3000000 (P-1 stage 1)
B1 = 440000, B2 = 13640000 (P-1 stage 2)
B1 = 440000 (P-1 stage 1)
B1 = 30000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2021-12-02T23:04:23+00:00