is 2 3583067 - 1
has 1078611 decimal digits
takes 0.376 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L612C5471476A2ED0double-checked
PRP40029943B9E2500DPRP-tested

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual271133.427169.0141%3000000900000001.17876.2669%134.605870.9560%1.9419%
PrimeNet2600.042963.3333%150003000000.00462.9727%0.047564.4233%1.0900%
GPU722640.993465.6250%200004000000.00621.9787%0.999666.3052%0.6802%
Difference+7+132.4337+3.3891%+2980000+89600000+1.1725+4.2882%+133.6063+4.6508%+1.2617%

Known prime factors (1 factor, 77.5 bits, 0.00216306% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
35830672142941472469033485640332477.50429903731530404448
25 × 3 × 19 × 839 × 19540631293
2021-05-228391954063129310,295162.13302.82

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2009-07-09T19:19:00Carsten Kossendeyleela20000245000---0.005--0.604%
2011-12-27T10:46:00Squeeky_SquirrelP4_2600850001593750---0.025--1.617%
2016-05-10T05:45:50Squeeky_SquirrelP4_2600225000658125012---0.087--2.763%
2020-02-01T14:13:50BigBrotherWinston30000009000000012---1.179--6.267%
2022-03-04T05:56:35Jocelyn LaroucheManual testing9000090000---0.014--0.534%
2022-03-22T10:43:19Jocelyn LaroucheManual testing100000100000---0.015--0.571%
2022-05-24T21:54:23Jocelyn LaroucheManual testing100000130364850---1.096--3.902%
2022-08-24T16:55:18Jocelyn LaroucheManual testing10000001000000---0.152--1.861%
2022-09-13T07:45:55Jocelyn LaroucheManual testing1000000130364850---1.226--5.915%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-06-28T00:00:00ANONYMOUSv4_computers21260--0.043--
2009-03-14T21:57:00S485122USB-Z260261--0.043--
2011-06-20T03:40:00Grant McCrackenthumper261262--0.086--
2012-07-02T04:04:00GrunwalderGIMPManual testing21263--0.445--
2016-02-23T16:29:34Mark RoseManual testing262263--0.274--
2015-01-30T19:16:00VictordeHollanderManual testing263264--0.548--
2015-01-30T19:16:00VictordeHollanderManual testing264265--1.043--
2016-02-26T10:03:23ramgeisManual testing265266--2.086--
2017-01-20T05:22:18Gordon SpenceManual testing266267--4.171--
2018-10-01T11:53:15TJAOIManual testing267268--8.342--
2020-12-20T02:17:01axnManual testing268269--16.68--
2021-03-18T11:37:32-Anonymous-Manual testing269270--33.37--
2021-03-18T11:37:32-Anonymous-Manual testing270271--66.74--


ECM factoring results:
Total ECM effort:2.353 GHz-days
Estimated T-Level:3.077
DigitsB1CompleteFacMiss
20110000.61554.043%
25500000.05794.489%
302500000.00499.643%


ECM Summary

B1B2factorcurvesGHz-days
50000470000040.576
500005000000121.777


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-07-05T00:00:00ANONYMOUSv4_computers612C5471476A2ED00.376
1999-07-26T00:00:00ANONYMOUSv4_computers612C5471476A2ED00.376


PRP results:
dateuseridcompidcofactorsres64PRP
2021-05-23T04:27:36tottenhoff2018pc
214294147246903348564033
40029943B9E2500Dno


P-1 factor-bounds graph:
B1 = 1000000, B2 = 130364850 (P-1 stage 2)
B1 = 3000000, B2 = 90000000 (P-1 stage 2)
B1 = 100000, B2 = 130364850 (P-1 stage 2)
B1 = 3000000 (P-1 stage 1)
B1 = 1000000 (P-1 stage 1)
B1 = 225000, B2 = 6581250 (P-1 stage 2)
B1 = 225000 (P-1 stage 1)
B1 = 85000, B2 = 1593750 (P-1 stage 2)
B1 = 100000 (P-1 stage 1)
B1 = 90000 (P-1 stage 1)
B1 = 85000 (P-1 stage 1)
B1 = 20000, B2 = 245000 (P-1 stage 2)
B1 = 20000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-09-13T07:45:55+00:00