is 2 6910697 - 1
has 2080328 decimal digits
takes 1.507 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L3243B12463FC37CDdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual272138.384568.0556%40000004143239108.33317.9703%146.717770.6016%2.5461%
PrimeNet2630.230963.4921%280007000000.02043.1593%0.251464.6455%1.1534%
GPU722674.299765.6716%450009000000.02902.2358%4.328766.4392%0.7675%
Difference+5+134.0848+2.3839%+3955000+413423910+8.3042+5.7345%+142.3890+4.1625%+1.7785%

Known prime factors:
No known factors for M6910697

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2001-08-24T00:00:00ANONYMOUSv4_computers3000030000---0.009--0.234%
2011-09-01T10:54:00Carsten Kossendeymother44000013310000---0.361--3.504%
2021-11-23T22:41:29Seth_TrManual testing400000011000000012---3.091--6.530%
2021-12-01T11:09:46Seth_TrManual testing4000000414323910---8.333--7.970%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-11-21T00:00:00Phantomasv4_computers21262--0.089--
2005-02-02T00:00:00ANONYMOUSv4_computers21263--0.231--
2014-02-09T10:09:00NesowaManual testing263264--0.284--
2014-02-17T19:28:00lycornManual testing264265--0.541--
2015-06-26T13:39:00VictordeHollanderManual testing265266--1.081--
2016-04-01T12:34:44Gordon SpenceManual testing266267--2.163--
2018-02-25T11:47:52-Anonymous-Manual testing267268--4.325--
2019-12-16T13:09:44mnd9Manual testing268269--8.651--
2021-07-14T22:39:25takahashiManual testing269270--17.30--
2021-08-10T15:19:02SRBaseManual testing270271--34.60--
2021-09-25T07:07:07SRBaseManual testing271272--69.21--


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)
1999-03-26T00:00:00ANONYMOUSv4_computers89BAEC8899E9F2__1.507
1999-05-30T00:00:00ANONYMOUSv4_computers3243B12463FC37CD1.507
2001-10-25T00:00:00ANONYMOUSv4_computers3243B12463FC37CD1.507


PRP results:
No PRP results for M6910697


P-1 factor-bounds graph:
B1 = 4000000, B2 = 414323910 (P-1 stage 2)
B1 = 4000000, B2 = 110000000 (P-1 stage 2)
B1 = 4000000 (P-1 stage 1)
B1 = 440000, B2 = 13310000 (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: 2021-12-01T11:09:46+00:00