is 2 350237 - 1
has 105432 decimal digits
takes 0.003 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L07E16E22FFE5C7E1double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26784.839571.6418 %100000002000000000.28618.5129 %85.125574.0559 %
Target2440.000056.8182 %65009000000.000812.2825 %0.000862.1220 %
Difference+23+84.8395+14.8236 %+9993500+199100000+0.2853-3.7696 %+85.1248+11.9339 %

Known prime factors (1 factor, 104.4 bits, 0.02979600% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
3502372597013602504872640736517368024732104.35737075089189675457486452279
3 × 12358363063225152495484093
2013-05-123123583630632251524954840934.371e+119.465e+151.768e+16

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2001-06-23ANONYMOUSv4_computers1000004000000--0.00423.167%
2002-06-09ANONYMOUSv4_computers32768327680012--0.00321.398%
2002-08-17ANONYMOUSv4_computers65536655360012--0.00624.031%
2006-01-15Jossv4_computers350237350237--0.00515.765%
2011-08-14JossManual testing12948221294822--0.01819.746%
2012-02-20alpertronManual testing1000000020000000012--0.28636.473%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2000-04-19ANONYMOUSv4_computers212540.007
2022-03-07LordJuliusManual testing254255
2001-03-11ANONYMOUSv4_computers212560.027
2002-02-17ANONYMOUSv4_computers212570.055
2004-01-18ANONYMOUSv4_computers212580.110
2008-12-29Sturle Sundekorsmo.ifi2582590.110
2009-01-27Sturle Sundegibus.ifi2592600.219


ECM factoring results:
Total ECM effort:10.071 GHz-days
Estimated T-Level:26.431
DigitsB1CompleteFacMiss
201100023.9230.000%
25500003.0254.857%
302500000.28675.115%
3510000000.02297.842%
4030000000.00199.861%


ECM Summary

B1B2factorcurvesGHz-days
10.010
5000050000002842.616
250000250000001437.445


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2001-12-08ANONYMOUSv4_computers07E16E22FFE5C7E10.003


PRP results:
dateuseridcompidcofactorsres64
2017-09-23Oliver KruseOllaptop
25970136025048726407365173680247
606D8C678211DC3D
2017-09-23Oliver KruseManual testing
25970136025048726407365173680247
606D8C678211DC3D
2017-10-13Oliver KruseGTX-3
25970136025048726407365173680247
606D8C678211DC3D
2017-12-15ATHxps
25970136025048726407365173680247
606D8C678211DC3D
2020-04-18Oliver KruseAddPrpType5
25970136025048726407365173680247
8A0E30989F4E3101


CERT results:
No CERT results for M350237


P-1 factor-bounds graph:
B1 = 10000000, B2 = 200000000 (P-1 stage 2)
B1 = 10000000 (P-1 stage 1)
B1 = 1294822 (P-1 stage 1)
B1 = 65536, B2 = 6553600 (P-1 stage 2)
B1 = 350237 (P-1 stage 1)
B1 = 100000, B2 = 4000000 (P-1 stage 2)
B1 = 32768, B2 = 3276800 (P-1 stage 2)
B1 = 100000 (P-1 stage 1)
B1 = 65536 (P-1 stage 1)
B1 = 32768 (P-1 stage 1)
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TF factor-bounds graph:
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this exponent TF target: 44
TF double-checked to: 67
ECM T-Level=26.43 ~= 71-bit
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Last modified: 2024-03-13T02:15:48+00:00