is 25383943-1
has 1,620,729 decimal digits
takes 0.850 GHz-days to do one L-L test
Last-known PrimeNet details:
0 L-L tests remaining
ResidueStatus
L-L57F598E1A2E1E5AEdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26922.174666.6667%1,000,0001,000,0000.22902.4576%22.403669.1242%6.2210%
PrimeNet2620.114162.9032%22,000550,0000.01163.0906%0.125765.9938%3.0906%
GPU722662.743165.1515%32,000650,0000.01502.0744%2.758167.2259%2.0744%
Difference+3+19.4315+1.5152%+968,000+350,000+0.2139+0.3831%+19.6455+1.8983%+1.8983%

Known prime factors (1 factor, 121.8 bits, 0.00226287% known):
Remaining cofactor is not a probable-prime

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
5383943473116407442689186004611647999358732137121.832439377244003780487650604443620
22 × 3 × 5 × 103 × 827 × 235891 × 527179 × 809189 × 854327
809,189854,3272019-12-113.159e+100.18590.3771

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2001-01-08T00:00:00vidmarv4_computers20,00020,000---0.005--0.265%
2009-11-20T17:39:00harleeP4_260060,0001,020,000---0.026--1.831%
2019-07-07T22:53:04Ivan MGAMERSDREAM85,0001,211,2506---0.034--2.065%
2019-12-11T09:46:22KingHiatus1,000,0001,000,00037121.8320.2291.7000.4582.458%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-04-05T00:00:00ANONYMOUSv4_computers?262--0.057--
2009-05-19T02:47:00GrunwalderGIMPManual testing262263--0.182--
2014-12-25T15:33:00VictordeHollanderManual testing263264--0.365--
2014-12-25T15:33:00VictordeHollanderManual testing264265--0.694--
2015-08-20T03:44:00snme2pm1Manual testing265266--1.388--
2016-08-12T12:04:26Gordon SpenceManual testing266267--2.776--
2018-06-19T09:09:19ramgeisManual testing267268--5.552--
2019-12-11T12:48:10Christoph ZengerManual testing268269--11.10--


ECM factoring results:
ECM Summary

B1B2factorcurvesGHz-days
50,0005,000,00092.161


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-02-14T00:00:00ANONYMOUSv4_computers7BF4EFCC1061AA__0.850
1999-11-17T00:00:00ANONYMOUSv4_computers57F598E1A2E1E5AE0.850
2001-02-11T00:00:00vidmarv4_computers57F598E1A2E1E5AE0.850


PRP results:
dateuseridcompidcofactorsres64PRP
2019-12-11T11:37:46Christoph ZengerManual testing
4731164074426891860046116479993587321
8AF86C27327F493Fno
2019-12-14T11:30:05Chang Chia-Tcheexbbbe-lt
4731164074426891860046116479993587321
8AF86C27327F493Fno


P-1 factor-bounds graph:
B1 = 1,000,000 (stage 1)
B1 = 85,000, B2 = 1,211,250 (stage 2)
B1 = 60,000, B2 = 1,020,000 (stage 2)
B1 = 85,000 (stage 1)
B1 = 60,000 (stage 1)
B1 = 20,000 (stage 1)
103
104
105
106
103
104
105
106
107
TF factor-bounds graph:
269
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267
266
265
264
263
262
250
260
270
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2100
2110
2120
2130
Last modified: 2019-12-14T11:30:05+00:00