is 2 1614289 - 1
has 485950 decimal digits
takes 0.072 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LB26EA055B0C755F9double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26836.923369.1176%250000003223518012001,139.003019.9527%1,175.926375.2795%6.1619%
PrimeNet2570.011963.1579%70001200000.00092.5525%0.012764.0983%0.9404%
GPU722610.190365.5738%6500600000.00061.0584%0.190965.9381%0.3644%
Difference+7+36.7330+3.5439%+24993500+322351741200+1,139.0024+18.8943%+1,175.7354+9.3414%+5.7975%

Known prime factors (1 factor, 128.4 bits, 0.00795550% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
161428945676632280173739904494444656906728863339128.425141476006713090840315750292100444
22 × 32 × 179 × 2813719 × 3955691 × 6810203 × 289643723
2022-11-0468102032896437238.903e+101.43911.9089

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2011-11-18T20:21:00BigBrotherWinston100000020000000---0.132--5.174%
2017-07-18T02:33:43Jocelyn Larouchelow 4M12000001200000012---0.116--4.749%
2017-08-07T22:32:08Jocelyn Larouchelow 4M20000002000000012---0.193--5.489%
2018-02-03T22:46:00VictordeHollanderManual testing1000000020000000012---1.318--9.066%
2022-11-04T06:04:13Naegi Makoto5950X2500000032235180120039128.4251,1390.1442,27819.953%


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2021-05-18T09:33:48Team_InspectorPurple10000005000000027--0.268


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-11-07T00:00:00ANONYMOUSv4_computers21257--0.012--
2003-07-21T00:00:00ANONYMOUSv4_computers21258--0.024--
2016-02-23T16:28:41Mark RoseManual testing258260--0.071--
2010-05-04T09:40:00Architects Cubedm1_tt260261--0.095--
2016-02-23T16:28:41Mark RoseManual testing261262--0.190--
2010-07-17T03:08:00GrunwalderGIMPManual testing21263--0.989--
2016-02-23T16:28:41Mark RoseManual testing262263--0.608--
2015-04-26T09:01:00omylistManual testing263264--1.216--
2015-04-27T09:50:00monstManual testing264265--2.315--
2015-10-11T16:52:46ramgeisManual testing265266--4.629--
2017-11-24T16:04:19TJAOIManual testing266267--9.258--
2019-09-13T11:21:38TJAOIManual testing267268--18.52--


ECM factoring results:
Total ECM effort:29.906 GHz-days
Estimated T-Level:25.672
DigitsB1CompleteFacMiss
201100014.8690.000%
25500001.63719.455%
302500000.13487.424%
3510000000.00999.106%


ECM Summary

B1B2factorcurvesGHz-days
50000500000028015.71
250000400000004114.19


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-07-27T00:00:00ANONYMOUSv4_computersB26EA055B0C755F90.072
2015-07-06T20:16:00MadPooManual testingB26EA055B0C755F90.072


PRP results:
dateuseridcompidcofactorsres64PRP
2022-11-04T10:24:44Naegi Makotoi5_T
456766322801737399044944446569067288633
A0AF095A10913FD6no


P-1 factor-bounds graph:
B1 = 25000000, B2 = 322351801200 (P-1 stage 2)
B1 = 25000000 (P-1 stage 1)
B1 = 10000000, B2 = 200000000 (P-1 stage 2)
B1 = 10000000 (P-1 stage 1)
B1 = 2000000, B2 = 20000000 (P-1 stage 2)
B1 = 1000000, B2 = 20000000 (P-1 stage 2)
B1 = 2000000 (P-1 stage 1)
B1 = 1200000, B2 = 12000000 (P-1 stage 2)
B1 = 1200000 (P-1 stage 1)
B1 = 1000000 (P-1 stage 1)
105
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105
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109
1010
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1012
TF factor-bounds graph:
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267
266
265
264
263
262
261
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258
257
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2100
2110
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Last modified: 2022-11-04T10:24:44+00:00