is 2 3274363 - 1
has 985682 decimal digits
takes 0.344 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
1 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRPDD7AA4C982839B__
unverified PRP

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26936.461168.1159%40000001500000001.82068.1165%38.281670.7038%2.5879%
PrimeNet2600.046963.3333%140002600000.00422.7746%0.051164.3507%1.0173%
GPU722641.087065.6250%170002800000.00481.6867%1.091866.2048%0.5798%
Difference+5+35.3740+2.4909%+3983000+149720000+1.8158+6.4298%+37.1898+4.4990%+4.4990%

Known prime factors (1 factor, 75.2 bits, 0.00229772% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
3274363444825305903789458705672375.2366792547220692841
127 × 137 × 193 × 2022791263
2021-10-0519320227912632,995.016.78431.347

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2009-07-09T04:54:00Carsten Kossendeydurandal15000191250---0.004--0.671%
2011-09-19T13:51:00harleeP4_2600600001065000---0.017--1.704%
2014-06-26T21:21:00ANONYMOUSManual testing7960279602---0.012--0.651%
2014-10-10T20:28:00Jocelyn LaroucheManual testing9920499204---0.015--0.746%
2016-01-17T13:12:28Jocelyn LaroucheManual testing38340038340006---0.087--3.242%
2016-01-21T11:51:27Jocelyn LaroucheManual testing46008046008006---0.104--3.457%
2020-12-30T01:44:00mikrMSI400000015000000012---1.821--8.117%
2022-04-02T19:48:43Jocelyn LaroucheManual testing1000000134316000---1.258--7.015%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-07-17T00:00:00ANONYMOUSv4_computers21260--0.047--
2009-04-02T04:53:00S485122USB-Z260261--0.047--
2011-10-02T04:42:00Grant McCrackenthumper261262--0.094--
2012-12-30T00:06:00dbaughManual testing262263--0.300--
2015-02-07T18:05:00VictordeHollanderManual testing263264--0.600--
2015-02-07T18:05:00VictordeHollanderManual testing264265--1.141--
2015-06-28T13:57:00ThaManual testing265266--2.282--
2017-04-04T13:00:39Gordon SpenceManual testing266267--4.564--
2018-12-10T15:07:55TJAOIManual testing267268--9.129--
2021-06-07T10:35:08TJAOIManual testing268269--18.26--


ECM factoring results:

Old Calculation Method

Total ECM effort:8.879 GHz-days
Estimated T-Level:3.050
DigitsB1CurvesCompleteFacMiss
201100061 / 1000.61054.169%
255000061 / 2800.21880.393%

New Calculation Method

Total ECM effort:8.879 GHz-days
Estimated T-Level:3.050
DigitsB1CompleteFacMiss
20110001.96813.977%
25500000.17883.707%
302500000.01198.911%


ECM Summary

B1B2factorcurvesGHz-days
500005000000578.297
50000500000040.582


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-09-14T00:00:00ANONYMOUSv4_computers181249167768DA__0.344


PRP results:
dateuseridcompidcofactorsres64PRP
2021-10-11T13:54:02Sébastien BrouckePortable_Seb
44482530590378945870567
DD7AA4C982839B__no
2021-10-14T15:24:48Peter_JakubOptiPlex
44482530590378945870567
DD7AA4C982839B93no


P-1 factor-bounds graph:
B1 = 4000000, B2 = 150000000 (P-1 stage 2)
B1 = 1000000, B2 = 134316000 (P-1 stage 2)
B1 = 4000000 (P-1 stage 1)
B1 = 1000000 (P-1 stage 1)
B1 = 460080, B2 = 4600800 (P-1 stage 2)
B1 = 383400, B2 = 3834000 (P-1 stage 2)
B1 = 460080 (P-1 stage 1)
B1 = 383400 (P-1 stage 1)
B1 = 60000, B2 = 1065000 (P-1 stage 2)
B1 = 99204 (P-1 stage 1)
B1 = 79602 (P-1 stage 1)
B1 = 60000 (P-1 stage 1)
B1 = 15000, B2 = 191250 (P-1 stage 2)
B1 = 15000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-04-02T19:48:43+00:00