is 2 2299919 - 1
has 692345 decimal digits
takes 0.155 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LC6DCAA7E60ED6FD5double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26825.916167.6471%500000100000000.09974.3694%26.015869.0607%1.4136%
PrimeNet2580.016762.0690%100001900000.00192.9280%0.018663.1796%1.1106%
GPU722620.267164.5161%120002000000.00221.7375%0.269365.1327%0.6165%
Difference+6+25.6490+3.1309%+488000+9800000+0.0975+2.6319%+25.7465+3.9280%+3.9280%

Known prime factors (1 factor, 70.0 bits, 0.00304350% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
229991911790755516871608141772269.998256329799372752
24 × 3 × 7 × 762886307657
2020-06-211676288630765797.2794,071.47,604.3

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-08-08T00:00:00ANONYMOUSv4_computers2048204800---0.001--0.229%
2010-10-20T22:15:00Oscar Östlin7501175011---0.007--0.679%
2011-01-18T02:47:00Oscar Östlin900001755000---0.018--2.267%
2013-12-03T16:49:00c10ck3rManual testing50000010000000---0.100--4.369%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2016-02-23T16:29:11Mark RoseManual testing21260--0.067--
2009-01-14T20:00:00Sturle Sundeaalto.ifi260261--0.067--
2012-05-12T10:47:00Sebastian HornbostelManual testing261262--0.134--
2013-12-06T02:46:00Jerry HallettManual testing262263--0.427--
2015-03-12T10:50:00VictordeHollanderManual testing263264--0.854--
2015-03-12T10:50:00VictordeHollanderManual testing264265--1.625--
2015-11-04T09:56:28ramgeisManual testing265266--3.249--
2017-05-27T13:18:47Gordon SpenceManual testing266267--6.498--
2019-03-04T13:44:34TJAOIManual testing267268--13.00--


ECM factoring results:

Old Calculation Method

Total ECM effort:5.929 GHz-days
Estimated T-Level:3.350
DigitsB1CurvesCompleteFacMiss
201100067 / 1000.67050.999%
255000067 / 2800.23978.685%

New Calculation Method

Total ECM effort:5.929 GHz-days
Estimated T-Level:3.350
DigitsB1CompleteFacMiss
20110002.16111.518%
25500000.19582.256%
302500000.01298.804%


ECM Summary

B1B2factorcurvesGHz-days
500005000000665.840
50000500000010.088


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-02-21T00:00:00JMGarciav4_computersC6DCAA7E60ED6FD50.155
2004-07-02T00:00:00JMGarciav4_computersC6DCAA7E60ED6FD50.155
2018-04-30T11:18:09kkmrkkblmbrbkoldC6DCAA7E60ED6FD50.155


PRP results:
dateuseridcompidcofactorsres64PRP
2020-06-21T18:36:12nordisweet16
1179075551687160814177
187AB767F5FD05F4no
2020-06-24T04:39:20arnaudstm-11-010
1179075551687160814177
187AB767F5FD05F4no


P-1 factor-bounds graph:
B1 = 500000, B2 = 10000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
B1 = 90000, B2 = 1755000 (P-1 stage 2)
B1 = 90000 (P-1 stage 1)
B1 = 75011 (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: 2020-06-24T04:39:20+00:00