is 2 2359043 - 1
has 710143 decimal digits
takes 0.159 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LEA3409518D6757FFdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26825.266567.6471%30000001000000000.81157.8334%26.078170.1814%2.5343%
PrimeNet2580.016362.0690%110002000000.00213.0508%0.018463.2262%1.1572%
GPU722620.260464.5161%130002200000.00241.8369%0.262865.1679%0.6518%
Difference+6+25.0061+3.1309%+2987000+99780000+0.8092+5.9965%+25.8153+5.0135%+5.0135%

Known prime factors (1 factor, 70.0 bits, 0.00296666% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
235904311682521063141848847772269.985247611448013916
22 × 3 × 7 × 2947755333499
2020-04-297294775533349958.90215,73229,383

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-09-21T00:00:00ANONYMOUSv4_computers2048204800---0.001--0.231%
2010-11-03T21:25:00Jocelyn LaroucheManual testing2000020000---0.002--0.260%
2010-12-22T21:22:00Oscar Östlin7501175011---0.007--0.682%
2011-01-23T13:57:00Oscar Östlin900001822500---0.018--2.297%
2014-08-07T10:52:00Jocelyn LaroucheManual testing117208117208---0.011--0.893%
2014-10-22T23:53:00Jocelyn LaroucheManual testing144416144416---0.014--1.004%
2015-08-15T23:31:00mikrMSI3000000100000000---0.812--7.833%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2016-02-23T16:29:12Mark RoseManual testing21260--0.065--
2009-01-17T11:12:00Sturle Sundekraus.ifi260261--0.065--
2012-05-30T07:42:00Sebastian HornbostelManual testing261262--0.130--
2013-12-04T21:14:00Jerry HallettManual testing262263--0.416--
2015-03-06T11:15:00VictordeHollanderManual testing263264--0.832--
2015-03-06T11:15:00VictordeHollanderManual testing264265--1.584--
2015-10-29T11:36:25ramgeisManual testing265266--3.168--
2017-06-13T16:34:54Gordon SpenceManual testing266267--6.335--
2019-04-22T13:11:35TJAOIManual testing267268--12.67--


ECM factoring results:

Old Calculation Method

Total ECM effort:4.529 GHz-days
Estimated T-Level:2.550
DigitsB1CurvesCompleteFacMiss
201100051 / 1000.51059.896%
255000051 / 2800.18283.321%

New Calculation Method

Total ECM effort:4.529 GHz-days
Estimated T-Level:2.550
DigitsB1CompleteFacMiss
20110001.64519.298%
25500000.14986.184%
302500000.00999.089%


ECM Summary

B1B2factorcurvesGHz-days
500005000000484.262
50000500000030.266


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-03-15T00:00:00ANONYMOUSv4_computersEA3409518D6757FF0.159
2018-05-10T18:43:38kkmrkkblmbrbkoldEA3409518D6757FF0.159


PRP results:
dateuseridcompidcofactorsres64PRP
2020-04-29T23:11:52atrenchDesktop
1168252106314184884777
2CC2C6C2F05AE0CCno
2020-04-30T01:34:26CrypticCluecruncher
1168252106314184884777
2CC2C6C2F05AE0CCno


P-1 factor-bounds graph:
B1 = 3000000, B2 = 100000000 (P-1 stage 2)
B1 = 3000000 (P-1 stage 1)
B1 = 90000, B2 = 1822500 (P-1 stage 2)
B1 = 144416 (P-1 stage 1)
B1 = 117208 (P-1 stage 1)
B1 = 90000 (P-1 stage 1)
B1 = 75011 (P-1 stage 1)
B1 = 20000 (P-1 stage 1)
B1 = 2048, B2 = 204800 (P-1 stage 2)
B1 = 2048 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2020-04-30T01:34:26+00:00