is 2 6954313 - 1
has 2093457 decimal digits
takes 1.516 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LEEF31293B2499704double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual272137.516668.0556%1000000300000000.81574.5618%138.332469.5128%
Target2674.272765.6716%450009000000.02902.2381%4.301766.4399%
Difference+5+133.2439+2.3839%+955000+29100000+0.7868+2.3236%+134.0307+3.0728%

Known prime factors:
No known factors for M6954313

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2009-06-20Roman MaznichenkoWorkShop850001615000---0.053--1.594%
2019-05-11takahashivaio30000050000006---0.176--2.684%
2021-06-18takahashivaio10000003000000012---0.816--4.562%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-07-05ANONYMOUSv4_computers21262--0.088--
2005-07-01ANONYMOUSv4_computers21263--0.230--
2014-02-09NesowaManual testing263264--0.282--
2014-02-16lycornManual testing264265--0.537--
2015-06-26VictordeHollanderManual testing265266--1.075--
2016-04-05Gordon SpenceManual testing266267--2.149--
2018-02-27-Anonymous-Manual testing267268--4.298--
2020-05-01TJAOIManual testing268269--8.596--
2021-08-01takahashiManual testing269270--17.19--
2021-08-12SRBaseManual testing270271--34.39--
2021-09-25SRBaseManual testing271272--68.77--


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)
1997-01-01Paul Victor Novaresebronco73EEF31293B24997041.516
1999-06-06Johan Schrooyenv4_computersEEF31293B24997041.516
2015-05-05MadPooManual testingEEF31293B24997041.516


PRP results:
No PRP results for M6954313


P-1 factor-bounds graph:
B1 = 1000000, B2 = 30000000 (P-1 stage 2)
B1 = 1000000 (P-1 stage 1)
B1 = 300000, B2 = 5000000 (P-1 stage 2)
B1 = 300000 (P-1 stage 1)
B1 = 85000, B2 = 1615000 (P-1 stage 2)
B1 = 85000 (P-1 stage 1)
103
104
105
106
103
104
105
106
107
108
TF factor-bounds graph:
272
271
270
269
268
267
266
265
264
263
262
this exponent TF target: 67
TF double-checked to: 67.8
ECM T-Level=1.15 ~= -13-bit
250
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270
280
Last modified: 2023-04-26T21:34:10+00:00