is 2 1409549 - 1
has 424317 decimal digits
takes 0.054 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LF12D7E06BCD57A42double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26721.080468.6567 %2000000600000000.28577.2077 %21.366170.9159 %
Target2600.109065.0000 %60003500000.00141.2444 %0.110365.4356 %
Difference+7+20.9715+3.6567 %+1994000+59650000+0.2843+5.9633%+21.2558+5.4803 %

Known prime factors (1 factor, 72.5 bits, 0.00514661% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
140954968849357836965511523032272.5442442247762829299
2442247762829299
2016-03-2412442247762829299678.477,366,46413,758,503

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2003-09-21Xyzzyv4_computers15000228750--0.0012.341%
2003-09-21Team Prime Ribv4_computers15000228750--0.0012.341%
2009-07-13markrlounge20000050000006--0.0307.167%
2014-11-06JossManual testing245535245535--0.0163.262%
2015-01-13JossManual testing368302368302--0.0243.800%
2015-02-14JossManual testing405132405132--0.0263.933%
2015-02-16alpertronManual testing20000006000000012--0.33412.598%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2001-10-25ANONYMOUSv4_computers212570.014
2003-07-13ANONYMOUSv4_computers212580.027
2016-02-23Mark RoseManual testing2582600.082
2009-04-14Sturle Sundehaydn.ifi2602610.109
2016-02-23Mark RoseManual testing2612620.218
2011-04-05GrunwalderGIMPManual testing212631.132
2016-02-23Mark RoseManual testing2622630.696
2015-03-10snme2pm1Manual testing2632641.393
2015-03-10snme2pm1Manual testing2642652.651
2015-09-27ramgeisManual testing2652665.302


ECM factoring results:
Total ECM effort:29.246 GHz-days
Estimated T-Level:25.704
DigitsB1CompleteFacMiss
201100014.6540.000%
25500001.65119.189%
302500000.14186.866%
3510000000.01099.021%


ECM Summary

B1B2factorcurvesGHz-days
50000500000024813.22
50000500000030.141
250000350000005015.88


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-04-02ANONYMOUSv4_computersF12D7E06BCD57A420.054


PRP results:
dateuseridcompidcofactorsres64
2017-09-30Oliver KruseGTX-3
6884935783696551152303
6699B55E7457B0ED
2017-10-26kkmrkkblmbrbkold
6884935783696551152303
6699B55E7457B0ED


CERT results:
No CERT results for M1409549


P-1 factor-bounds graph:
B1 = 2000000, B2 = 60000000 (P-1 stage 2)
B1 = 2000000 (P-1 stage 1)
B1 = 200000, B2 = 5000000 (P-1 stage 2)
B1 = 405132 (P-1 stage 1)
B1 = 368302 (P-1 stage 1)
B1 = 245535 (P-1 stage 1)
B1 = 200000 (P-1 stage 1)
B1 = 15000, B2 = 228750 (P-1 stage 2)
B1 = 15000 (P-1 stage 1)
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TF factor-bounds graph:
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this exponent TF target: 60
TF double-checked to: 67
ECM T-Level=25.7 ~= 69-bit
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Last modified: 2024-03-03T02:29:32+00:00