is 2 589481 - 1
has 177452 decimal digits
takes 0.009 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LFFC11518C1238DDBdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual268101.114270.5882%20060841009233225012.156211.5506%113.270473.9855%
Target2440.000054.5455%100003400000.000615.2579%0.000661.4809%
Difference+24+101.1142+16.0428%+1996084+10091992250+12.1556-3.7073%+113.2698+12.5046%

Known prime factors (1 factor, 98.5 bits, 0.01671797% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
5894814637438776444120786963272290393098.549393349300184749023883999
72 × 11 × 31 × 977 × 699709 × 34436253727
2022-12-05699709344362537271.942e+1141.35177.204

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2001-12-22ANONYMOUSv4_computers2000200000---0.000--0.149%
2002-01-22ANONYMOUSv4_computers4096409600---0.001--0.332%
2002-03-10ANONYMOUSv4_computers8192819200---0.001--0.618%
2002-04-28ANONYMOUSv4_computers163841638400---0.002--1.030%
2002-05-11ANONYMOUSv4_computers500001000000---0.002--1.357%
2002-07-06ANONYMOUSv4_computers327683276800---0.005--1.578%
2002-09-22ANONYMOUSv4_computers655366553600---0.009--2.263%
2003-06-01ANONYMOUSv4_computers13107213107200---0.018--3.074%
2011-07-10Jocelyn LaroucheManual testing395539395539---0.009--1.335%
2011-08-24Jocelyn LaroucheManual testing659232659232---0.015--1.688%
2012-03-05Jocelyn LaroucheManual testing824041824041---0.018--1.857%
2012-07-21Jocelyn LaroucheManual testing11789621178962---0.026--2.149%
2013-10-17David Campeaui5-2500k124500039840000---0.074--5.356%
2015-10-22Bruno Victal5820K-linux16000006600000012---0.113--5.997%
2015-11-15Sid & AndyBullseye589481017684430012---0.335--7.853%
2019-05-09alexlaptop1000000040000000012---0.688--9.175%
2022-11-22Jocelyn LaroucheManual testing200608410092332250---12.16--11.551%


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2022-12-01masserManual testing400000016800000010017--0.314
2022-12-05masserManual testing800000038400000065P+13098.5490.682
2022-12-09masserManual testing1600000081600000027P+13098.5491.418


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2000-04-12ANONYMOUSv4_computers21254--0.004--
2022-03-07LordJuliusManual testing254255--0.004--
2001-04-15ANONYMOUSv4_computers21256--0.016--
2002-01-08ANONYMOUSv4_computers21257--0.033--
2003-11-16ANONYMOUSv4_computers21258--0.065--
2016-02-23Mark RoseManual testing258260--0.195--
2016-02-23Mark RoseManual testing260261--0.261--
2015-07-13NRManual testing261262--0.521--
2015-09-08Gordon SpenceManual testing262263--1.665--
2015-09-08Gordon SpenceManual testing263264--3.331--
2017-11-15BloodERazorManual testing264265--6.338--
2018-06-04chuenkitManual testing265266--12.68--
2020-02-11YxinityManual testing266267--25.35--
2022-04-08Gordon SpenceManual testing267268--50.71--


ECM factoring results:
Total ECM effort:24.285 GHz-days
Estimated T-Level:27.069
DigitsB1CompleteFacMiss
201100033.4650.000%
25500004.3091.345%
302500000.41466.119%
3510000000.03296.860%
4030000000.00299.795%


ECM Summary

B1B2factorcurvesGHz-days
5000050000003696.243
2500002500000019116.16
25000029000000141.250
2500003025000070.635


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2015-04-11MadPooManual testingFFC11518C1238DDB0.009


PRP results:
dateuseridcompidcofactorsres64PRP
2022-12-05masserManual testing
463743877644412078696327229039
F78CB1311A9CD26Fno


P-1 factor-bounds graph:
B1 = 2006084, B2 = 10092332250 (P-1 stage 2)
B1 = 16000000, B2 = 816000000 (P+1 stage 2)
B1 = 10000000, B2 = 400000000 (P-1 stage 2)
B1 = 8000000, B2 = 384000000 (P+1 stage 2)
B1 = 16000000 (P+1 stage 1)
B1 = 5894810, B2 = 176844300 (P-1 stage 2)
B1 = 10000000 (P-1 stage 1)
B1 = 8000000 (P+1 stage 1)
B1 = 5894810 (P-1 stage 1)
B1 = 1600000, B2 = 66000000 (P-1 stage 2)
B1 = 1245000, B2 = 39840000 (P-1 stage 2)
B1 = 2006084 (P-1 stage 1)
B1 = 1600000 (P-1 stage 1)
B1 = 1245000 (P-1 stage 1)
B1 = 1178962 (P-1 stage 1)
B1 = 131072, B2 = 13107200 (P-1 stage 2)
B1 = 824041 (P-1 stage 1)
B1 = 659232 (P-1 stage 1)
B1 = 65536, B2 = 6553600 (P-1 stage 2)
B1 = 395539 (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 = 50000, B2 = 1000000 (P-1 stage 2)
B1 = 65536 (P-1 stage 1)
B1 = 8192, B2 = 819200 (P-1 stage 2)
B1 = 50000 (P-1 stage 1)
B1 = 32768 (P-1 stage 1)
B1 = 4096, B2 = 409600 (P-1 stage 2)
B1 = 16384 (P-1 stage 1)
B1 = 2000, B2 = 200000 (P-1 stage 2)
B1 = 8192 (P-1 stage 1)
B1 = 4096 (P-1 stage 1)
B1 = 2000 (P-1 stage 1)
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TF factor-bounds graph:
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266
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2100
Last modified: 2022-12-09T14:37:58+00:00