is 2 1449583 - 1
has 436368 decimal digits
takes 0.055 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L26A3409C5809A4CBdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26720.498368.6567 %500000150000000.07144.9280 %20.569770.2013 %
Target2600.106065.0000 %65004500000.00171.3964 %0.107765.4887 %
Difference+7+20.3923+3.6567 %+493500+14550000+0.0697+3.5316%+20.4620+4.7126 %

Known prime factors (1 factor, 70.4 bits, 0.00485508% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
144958315346900570380452571832270.378529355703342977
7 × 17 × 1066511 × 4170953
2013-11-3010665114170953164.840.06840.1202

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2010-07-16Rob_Deetwopc100000200000--0.0072.977%
2010-07-17Rob_Deetwopc200000300000--0.0133.532%
2010-07-18Rob_Deetwopc20000010000006--0.0165.076%
2010-07-19Rob_Deetwopc20000020000006--0.0195.980%
2010-07-20Rob_Deetwopc20000030000006--0.0236.514%
2010-07-21Rob_Deetwopc20000040000006--0.0266.895%
2010-07-22Rob_Deetwopc20000050000006--0.0307.192%
2016-03-17alpertronManual testing5000001500000012---9.443%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2001-10-13ANONYMOUSv4_computers212570.013
2003-07-21ANONYMOUSv4_computers212580.026
2010-05-12Architects Cubeda3_bu22602610.106
2011-05-07GrunwalderGIMPManual testing212631.101


ECM factoring results:
Total ECM effort:29.686 GHz-days
Estimated T-Level:25.702
DigitsB1CompleteFacMiss
201100014.5770.000%
25500001.64419.326%
302500000.14086.905%
3510000000.01099.023%


ECM Summary

B1B2factorcurvesGHz-days
10.095
50000500000024913.62
250000350000005015.97


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-01-10ANONYMOUSv4_computers26A3409C5809A4CB0.055


PRP results:
dateuseridcompidcofactorsres64
2017-10-01Oliver KruseGTX-0
1534690057038045257183
DDD7C79DA5F61168
2017-10-27kkmrkkblmbrbkc4.xlarge
1534690057038045257183
DDD7C79DA5F61168


CERT results:
No CERT results for M1449583


P-1 factor-bounds graph:
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
B1 = 200000, B2 = 5000000 (P-1 stage 2)
B1 = 200000, B2 = 4000000 (P-1 stage 2)
B1 = 200000, B2 = 3000000 (P-1 stage 2)
B1 = 200000, B2 = 2000000 (P-1 stage 2)
B1 = 200000, B2 = 1000000 (P-1 stage 2)
B1 = 200000, B2 = 300000 (P-1 stage 2)
B1 = 200000 (P-1 stage 1)
B1 = 100000, B2 = 200000 (P-1 stage 2)
B1 = 100000 (P-1 stage 1)
104
105
106
107
104
105
106
107
108
TF factor-bounds graph:
263
261
258
257
this exponent TF target: 60
TF double-checked to: 67
ECM T-Level=25.7 ~= 69-bit
250
260
270
280
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Last modified: 2024-02-09T03:30:02+00:00