is 2 6975361 - 1
has 2099793 decimal digits
takes 1.521 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L92D5E6282E2B1F78double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual272137.101768.0556%3000000750000002.18885.9865%139.290569.9679%1.9124%
PrimeNet2630.228863.4921%280007000000.02043.1641%0.249264.6472%1.1552%
GPU722674.259865.6716%450009000000.02902.2392%4.288866.4403%0.7687%
Difference+5+132.8418+2.3839%+2955000+74100000+2.1599+3.7473%+135.0017+3.5276%+1.1437%

Known prime factors:
No known factors for M6975361

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2001-12-22T00:00:00ANONYMOUSv4_computers30000157500---0.012--0.581%
2011-07-07T13:35:00Carsten Kossendeyleela44000013530000---0.365--3.520%
2021-11-18T04:33:48Seth_TrManual testing30000007500000012---2.189--5.986%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-07-11T00:00:00ANONYMOUSv4_computers21262--0.088--
2005-08-01T00:00:00ANONYMOUSv4_computers21263--0.229--
2014-02-09T10:18:00NesowaManual testing263264--0.281--
2014-02-15T15:51:00lycornManual testing264265--0.536--
2015-07-03T01:16:00VictordeHollanderManual testing265266--1.071--
2016-04-26T14:24:10Gordon SpenceManual testing266267--2.143--
2018-02-26T00:49:29-Anonymous-Manual testing267268--4.285--
2020-04-24T07:20:54TJAOIManual testing268269--8.570--
2021-08-08T08:07:39takahashiManual testing269270--17.14--
2021-09-06T18:07:53SRBaseManual testing270271--34.28--
2021-09-25T07:00:50SRBaseManual testing271272--68.56--


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)
1999-12-23T00:00:00ANONYMOUSv4_computers92D5E6282E2B1F781.521
2002-02-03T00:00:00ANONYMOUSv4_computers92D5E6282E2B1F781.521


PRP results:
No PRP results for M6975361


P-1 factor-bounds graph:
B1 = 3000000, B2 = 75000000 (P-1 stage 2)
B1 = 3000000 (P-1 stage 1)
B1 = 440000, B2 = 13530000 (P-1 stage 2)
B1 = 440000 (P-1 stage 1)
B1 = 30000, B2 = 157500 (P-1 stage 2)
B1 = 30000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2021-11-18T04:33:48+00:00