is 2 6982049 - 1
has 2101807 decimal digits
takes 1.522 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L7EB560CB46E9C869double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual272136.970368.0556%2000000580000001.59705.5233%138.567469.8199%1.7644%
PrimeNet2630.228663.4921%300008000000.02273.3122%0.251364.7013%1.2092%
GPU722674.255865.6716%450009000000.02902.2396%4.284766.4405%0.7688%
Difference+5+132.7146+2.3839%+1955000+57100000+1.5681+3.2837%+134.2827+3.3795%+0.9956%

Known prime factors:
No known factors for M6982049

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2001-09-16T00:00:00ANONYMOUSv4_computers3000030000---0.009--0.235%
2011-09-08T05:04:00Carsten Kossendeymother44500013572500---0.367--3.528%
2021-11-07T02:25:58Seth_TrManual testing20000005800000012---1.597--5.523%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-07-05T00:00:00ANONYMOUSv4_computers21262--0.088--
1998-07-11T00:00:00ANONYMOUSv4_computers21262--0.088--
1998-07-21T00:00:00ANONYMOUSv4_computers21262--0.088--
1998-08-02T00:00:00ANONYMOUSv4_computers21262--0.088--
1998-08-09T00:00:00ANONYMOUSv4_computers21262--0.088--
2005-08-16T00:00:00ANONYMOUSv4_computers21263--0.229--
2014-02-09T10:18:00NesowaManual testing263264--0.281--
2014-02-14T13:44:00lycornManual testing264265--0.535--
2015-07-03T01:16:00VictordeHollanderManual testing265266--1.070--
2016-04-26T14:24:13Gordon SpenceManual testing266267--2.141--
2018-02-25T11:47:56-Anonymous-Manual testing267268--4.281--
2020-04-10T07:57:02TJAOIManual testing268269--8.562--
2021-08-11T11:44:24takahashiManual testing269270--17.12--
2021-09-06T18:06:03SRBaseManual testing270271--34.25--
2021-09-26T07:30:02SRBaseManual testing271272--68.50--


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)
1999-03-26T00:00:00netconxv4_computers7EB560CB46E9C8691.522
2001-10-27T00:00:00ANONYMOUSv4_computers7EB560CB46E9C8691.522


PRP results:
No PRP results for M6982049


P-1 factor-bounds graph:
B1 = 2000000, B2 = 58000000 (P-1 stage 2)
B1 = 2000000 (P-1 stage 1)
B1 = 445000, B2 = 13572500 (P-1 stage 2)
B1 = 445000 (P-1 stage 1)
B1 = 30000 (P-1 stage 1)
103
104
105
106
107
103
104
105
106
107
108
TF factor-bounds graph:
272
271
270
269
268
267
266
265
264
263
262
250
260
270
280
290
2100
Last modified: 2021-11-07T02:25:58+00:00