is 2 7144153 - 1
has 2150605 decimal digits
takes 1.558 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L4EED7655F53C333Adouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual272133.862468.0556%1993731260807547045.52389.3374%179.386271.0383%2.9828%
PrimeNet2630.223463.4921%300008000000.02273.3244%0.246264.7058%1.2137%
GPU722674.159265.6716%4500010000000.03072.3075%4.189966.4638%0.7921%
Difference+5+129.7032+2.3839%+1948731+2607075470+45.4931+7.0299%+175.1963+4.5746%+4.5746%

Known prime factors:
No known factors for M7144153

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2001-11-14T00:00:00ANONYMOUSv4_computers35000358750---0.017--0.816%
2011-12-22T06:57:00James Heinrich3930K1350002902500---0.090--2.053%
2022-01-22T20:29:11LaurVZero81819937311993731---0.630--2.402%
2022-01-23T22:39:33LaurVZero81819937312608075470---45.52--9.337%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-03-15T00:00:00ANONYMOUSv4_computers21262--0.086--
2001-11-14T00:00:00ANONYMOUSv4_computers21263--0.223--
2014-02-02T23:30:00NesowaManual testing263264--0.275--
2014-02-06T22:41:00lycornManual testing264265--0.523--
2015-06-21T19:54:00VictordeHollanderManual testing265266--1.046--
2016-10-23T19:16:35Gordon SpenceManual testing266267--2.092--
2018-07-24T09:46:40ramgeisManual testing267268--4.184--
2020-03-20T12:12:30TJAOIManual testing268269--8.368--
2021-08-19T15:45:12SRBaseManual testing269270--16.74--
2021-08-24T16:20:06SRBaseManual testing270271--33.47--
2021-10-10T08:40:30SRBaseManual testing271272--66.94--


ECM factoring results:

Old Calculation Method

Total ECM effort:1.989 GHz-days
Estimated T-Level:0.300
DigitsB1CurvesCompleteFacMiss
20110006 / 1000.06094.148%
25500006 / 2800.02197.876%

New Calculation Method

Total ECM effort:1.989 GHz-days
Estimated T-Level:0.300
DigitsB1CompleteFacMiss
20110000.23179.392%
25500000.02197.887%
302500000.00199.865%


ECM Summary

B1B2factorcurvesGHz-days
50000500000061.989


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-06-26T00:00:00ANONYMOUSv4_computers69E316F6EF1257__1.558
1999-09-22T00:00:00ANONYMOUSv4_computers4EED7655F53C333A1.558
2001-12-22T00:00:00ANONYMOUSv4_computersDA2411A977B262__1.558
2002-04-14T00:00:00ANONYMOUSv4_computers4EED7655F53C333A1.558


PRP results:
No PRP results for M7144153


P-1 factor-bounds graph:
B1 = 1993731, B2 = 2608075470 (P-1 stage 2)
B1 = 1993731 (P-1 stage 1)
B1 = 135000, B2 = 2902500 (P-1 stage 2)
B1 = 135000 (P-1 stage 1)
B1 = 35000, B2 = 358750 (P-1 stage 2)
B1 = 35000 (P-1 stage 1)
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1010
TF factor-bounds graph:
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Last modified: 2022-01-23T22:39:33+00:00