is 2 6953627 - 1
has 2093251 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-L13CD78716DEC11BCdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual272137.530268.0556%20000002588493605.05696.9813%142.587170.2857%2.2301%
PrimeNet2630.229563.4921%280007000000.02043.1625%0.250064.6466%1.1546%
GPU722674.273265.6716%450009000000.02902.2381%4.302166.4399%0.7683%
Difference+5+133.2570+2.3839%+1955000+257949360+5.0280+4.7432%+138.2850+3.8458%+1.4618%

Known prime factors:
No known factors for M6953627

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2001-10-20T00:00:00ANONYMOUSv4_computers30000232500---0.013--0.670%
2011-12-12T03:07:00James HeinrichQ66001300002827500---0.088--2.016%
2020-01-22T18:43:19takahashivaio6000001200000012---0.386--3.584%
2021-12-07T04:15:06Seth_TrManual testing2000000258849360---5.057--6.981%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-07-11T00:00:00ANONYMOUSv4_computers21262--0.088--
2001-12-08T00:00:00ANONYMOUSv4_computers21263--0.230--
2014-02-09T10:13:00NesowaManual testing263264--0.282--
2014-02-16T01:22:00lycornManual testing264265--0.537--
2015-06-26T13:39:00VictordeHollanderManual testing265266--1.075--
2016-04-05T22:46:28Gordon SpenceManual testing266267--2.149--
2018-02-27T00:21:58-Anonymous-Manual testing267268--4.299--
2020-05-01T08:51:03TJAOIManual testing268269--8.597--
2021-07-31T07:00:48takahashiManual testing269270--17.19--
2021-08-12T16:42:40SRBaseManual testing270271--34.39--
2021-09-30T16:43:09SRBaseManual testing271272--68.78--


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_computers99348F5A97C9DD__1.516
1999-08-22T00:00:00ANONYMOUSv4_computers332FAFBF9D86AE__1.516
2001-01-14T00:00:00ANONYMOUSv4_computers332FAFBF9D86AE__1.516
2001-11-17T00:00:00ANONYMOUSv4_computers13CD78716DEC11BC1.516
2002-01-22T00:00:00ANONYMOUSv4_computers13CD78716DEC11BC1.516


PRP results:
No PRP results for M6953627


P-1 factor-bounds graph:
B1 = 2000000, B2 = 258849360 (P-1 stage 2)
B1 = 2000000 (P-1 stage 1)
B1 = 600000, B2 = 12000000 (P-1 stage 2)
B1 = 600000 (P-1 stage 1)
B1 = 130000, B2 = 2827500 (P-1 stage 2)
B1 = 130000 (P-1 stage 1)
B1 = 30000, B2 = 232500 (P-1 stage 2)
B1 = 30000 (P-1 stage 1)
103
104
105
106
107
103
104
105
106
107
108
109
TF factor-bounds graph:
272
271
270
269
268
267
266
265
264
263
262
250
260
270
280
290
2100
Last modified: 2021-12-07T04:15:06+00:00