is 2 46489 - 1
has 13995 decimal digits
takes 0.000 GHz-days to do one PRP test
Last-known PrimeNet details:
Assigned as ecm on 2021-08-16, 0.0% done, ETC 2023-12-09
0 primality tests remaining
ResidueStatus
L-LD65669DD9CDBC5B9double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual267639.160276.1194%70033373241760459617877032,533.504929.9184%33,172.665183.2641%
Target2440.000163.6364%500500000.00001.9977%0.000164.3628%
Difference+23+639.1601+12.4830%+700333232+417604596128770+32,533.5049+27.9207%+33,172.6650+18.9013%

Known prime factors:
No known factors for M46489

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2001-04-29ANONYMOUSv4_computers10000010000000---0.001--2.091%
2001-08-18Alex Kruppav4_computers1000000100000000---0.009--5.001%
2002-04-28ANONYMOUSv4_computers163841638400---0.000--0.714%
2002-06-09ANONYMOUSv4_computers327683276800---0.000--1.139%
2002-07-20ANONYMOUSv4_computers655366553600---0.001--1.692%
2003-02-02ANONYMOUSv4_computers13107213107200---0.001--2.371%
2003-03-27ANONYMOUSv4_computers26214426214400---0.002--3.167%
2003-04-27ANONYMOUSv4_computers1048576104857600---0.010--5.072%
2003-05-26ANONYMOUSv4_computers2097152209715200---0.019--6.166%
2003-07-21ANONYMOUSv4_computers4194304419430400---0.038--7.344%
2003-10-14ANONYMOUSv4_computers8388608838860800---0.077--8.598%
2003-10-23ANONYMOUSv4_computers167772161677721600---0.153--9.909%
2011-07-24Jocelyn LaroucheManual testing1775594217755942---0.025--4.259%
2012-02-17Jocelyn LaroucheManual testing2219492722194927---0.032--4.528%
2012-05-29Jocelyn LaroucheManual testing5326782653267826---0.076--5.658%
2012-06-24alpertronManual testing1000000002000000000---0.291--11.074%
2017-06-10c10ck3raleman5000000001000000000012---1.455--14.092%
2019-04-29alexManual testing10000000005000000000012---5.247--16.953%
2023-02-16Jocelyn LaroucheManual testing532688261246279474440---97.16--19.435%
2023-04-19JacobZPM1Server700333732417604596178770---32,534--29.918%


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2022-09-25masserManual testing25000008250000018253--0.012
2022-09-25masserManual testing500000020500000065--0.026
2022-09-25masserManual testing1000000049000000027--0.058
2023-08-10masserManual testing1500000002685000000016641--2.364


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-10-29ANONYMOUSv4_computers252253--0.013--
2000-03-27ANONYMOUSv4_computers21254--0.052--
2000-10-28ANONYMOUSv4_computers21256--0.206--
2002-11-09ANONYMOUSv4_computers21257--0.413--
2016-02-23LaurVManual testing257258--0.413--
2009-01-13Sturle Sundegicy.ifi258259--0.826--
2009-02-07Sturle Sundenardi.ifi259260--1.652--
2013-11-30LaurVManual testing260261--3.304--
2014-06-28Sid & AndyMrs_Potato_Head261262--6.608--
2016-07-22Sid & AndyBullseye262263--21.12--
2018-07-22YxinityYGSMainFrame263264--42.23--
2018-07-23YxinityManual testing263264--42.23--
2019-09-10YxinityYGSMainFrame264265--80.37--
2019-09-10YxinityManual testing264265--80.37--
2021-07-22Ruslan BorisovManual testing265266--160.7--


ECM factoring results:
Total ECM effort:256.801 GHz-days
Estimated T-Level:39.564
DigitsB1CompleteFacMiss
2011000832.1670.000%
2550000218.9810.000%
3025000043.7950.000%
3510000006.9810.093%
4030000000.91340.142%
45110000000.10390.201%
50440000000.01099.000%


ECM Summary

B1B2factorcurvesGHz-days
100000010000000010.021
30000003000000004,160256.8


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1997-01-01George WoltmanD65669DD9CDBC5B94.58433e-5
2015-04-11MadPooManual testingD65669DD9CDBC5B94.58433e-5


PRP results:
No PRP results for M46489


P-1 factor-bounds graph:
B1 = 700333732, B2 = 417604596178770 (P-1 stage 2)
B1 = 53268826, B2 = 1246279474440 (P-1 stage 2)
B1 = 1000000000, B2 = 50000000000 (P-1 stage 2)
B1 = 500000000, B2 = 10000000000 (P-1 stage 2)
B1 = 1000000000 (P-1 stage 1)
B1 = 700333732 (P-1 stage 1)
B1 = 500000000 (P-1 stage 1)
B1 = 100000000, B2 = 2000000000 (P-1 stage 2)
B1 = 16777216, B2 = 1677721600 (P-1 stage 2)
B1 = 100000000 (P-1 stage 1)
B1 = 8388608, B2 = 838860800 (P-1 stage 2)
B1 = 53268826 (P-1 stage 1)
B1 = 53267826 (P-1 stage 1)
B1 = 4194304, B2 = 419430400 (P-1 stage 2)
B1 = 22194927 (P-1 stage 1)
B1 = 17755942 (P-1 stage 1)
B1 = 16777216 (P-1 stage 1)
B1 = 2097152, B2 = 209715200 (P-1 stage 2)
B1 = 8388608 (P-1 stage 1)
B1 = 1048576, B2 = 104857600 (P-1 stage 2)
B1 = 1000000, B2 = 100000000 (P-1 stage 2)
B1 = 4194304 (P-1 stage 1)
B1 = 2097152 (P-1 stage 1)
B1 = 262144, B2 = 26214400 (P-1 stage 2)
B1 = 1048576 (P-1 stage 1)
B1 = 1000000 (P-1 stage 1)
B1 = 131072, B2 = 13107200 (P-1 stage 2)
B1 = 100000, B2 = 10000000 (P-1 stage 2)
B1 = 65536, B2 = 6553600 (P-1 stage 2)
B1 = 262144 (P-1 stage 1)
B1 = 32768, B2 = 3276800 (P-1 stage 2)
B1 = 131072 (P-1 stage 1)
B1 = 16384, B2 = 1638400 (P-1 stage 2)
B1 = 100000 (P-1 stage 1)
B1 = 65536 (P-1 stage 1)
B1 = 32768 (P-1 stage 1)
B1 = 16384 (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: 67.9
ECM T-Level=39.56 ~= 115-bit
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Last modified: 2023-12-05T17:17:04+00:00