is 2 3328513 - 1
has 1001983 decimal digits
takes 0.350 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L47D796E4B9D54689double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual27071.789068.5714 %630000022713580890189.366213.8868 %261.155272.9359 %
Target2641.069365.6250 %1800015000000.01501.7533 %1.084466.2277 %
Difference+6+70.7197+2.9464 %+6282000+22712080890+189.3511+12.1336%+260.0708+6.7082 %

Known prime factors:
No known factors for M3328513

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2009-07-03Carsten Kossendeymother15000202500--0.0041.485%
2011-10-05USAFSSP4_2600550008800006--0.0152.998%
2012-11-24Squeeky_SquirrelT7500_220021000046725006--0.0695.293%
2018-08-06JossManual testing420000840000---3.669%
2018-08-07JossManual testing4200001260000---4.140%
2018-08-13JossManual testing4200002940000---5.136%
2018-08-14JossManual testing4200003360000--0.0885.294%
2020-05-15mikrMSI400000015000000012--1.56211.861%
2023-05-09JossManual testing1000000962851890--8.51413.356%
2023-05-10Sid & AndyMagic_8_Ball630000022713580890--198.219.994%


Trial Factoring results:
5758596061626364656667686970
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2001-09-10David Campeauv4_computers212600.023
2009-03-30S485122USB-A2602610.046
2011-09-03markroldgamer2612620.092
2012-08-25GrunwalderGIMPManual testing212630.479
2016-02-23Mark RoseManual testing2622630.295
2015-02-11VictordeHollanderManual testing2632651.712
2016-03-02ramgeisManual testing2652662.245
2017-02-27Gordon SpenceManual testing2662674.490
2018-11-12TJAOIManual testing2672688.980
2021-08-08MadPooManual testing26826917.96
2022-08-01TJAOIManual testing26927035.92


ECM factoring results:
Total ECM effort:18.168 GHz-days
Estimated T-Level:22.438
DigitsB1CompleteFacMiss
20110005.2650.517%
25500000.48861.411%
302500000.03196.969%
3510000000.00199.856%


ECM Summary

B1B2factorcurvesGHz-days
50000500000012816.43
50000700000071.034
500004739242210.702


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-06-15ANONYMOUSv4_computers47D796E4B9D546890.350
2001-07-29ANONYMOUSv4_computers47D796E4B9D546890.350


PRP results:
No PRP results for M3328513


CERT results:
No CERT results for M3328513


P-1 factor-bounds graph:
B1 = 6300000, B2 = 22713580890 (P-1 stage 2)
B1 = 1000000, B2 = 962851890 (P-1 stage 2)
B1 = 4000000, B2 = 150000000 (P-1 stage 2)
B1 = 6300000 (P-1 stage 1)
B1 = 4000000 (P-1 stage 1)
B1 = 1000000 (P-1 stage 1)
B1 = 420000, B2 = 3360000 (P-1 stage 2)
B1 = 420000, B2 = 2940000 (P-1 stage 2)
B1 = 420000, B2 = 1260000 (P-1 stage 2)
B1 = 210000, B2 = 4672500 (P-1 stage 2)
B1 = 420000, B2 = 840000 (P-1 stage 2)
B1 = 420000 (P-1 stage 1)
B1 = 210000 (P-1 stage 1)
B1 = 55000, B2 = 880000 (P-1 stage 2)
B1 = 55000 (P-1 stage 1)
B1 = 15000, B2 = 202500 (P-1 stage 2)
B1 = 15000 (P-1 stage 1)
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1011
TF factor-bounds graph:
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268
267
266
265
263
262
261
260
this exponent TF target: 64
TF double-checked to: 67
ECM T-Level=22.44 ~= 58-bit
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Last modified: 2024-03-13T02:15:48+00:00