is 2 1119907 - 1
has 337126 decimal digits
takes 0.033 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LEC9F98FBD9C4090Cdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual271426.891170.4225%50000002000000000.67156.6184%427.562572.3801%1.9576%
PrimeNet2560.008662.5000%4500700000.00032.0813%0.008963.2805%0.7805%
GPU722600.137165.0000%4500220000.00020.6867%0.137465.2403%0.2403%
Difference+11+426.7539+5.4225%+4995500+199978000+0.6712+5.9317%+427.4252+7.1398%+7.1398%

Known prime factors (1 factor, 68.5 bits, 0.00612084% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
11199074314390295537599558172168.548192622704186044
22 × 11 × 6427 × 681155863
2017-06-02642768115586368.9831.59522.9788

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2001-12-01T00:00:00Mattv4_computers15000221250---0.001--0.404%
2012-11-02T03:19:00kurlysmile50000010000000---0.044--2.943%
2015-03-18T06:18:00mikrMSI5000000200000000---0.671--6.618%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-11-24T00:00:00ANONYMOUSv4_computers21257--0.017--
2016-02-23T16:28:22Mark RoseManual testing257260--0.120--
2009-02-19T17:14:00Sturle Sundegorky.ifi260261--0.137--
2011-09-26T13:35:00BdotManual testing261264--2.904--
2013-10-16T18:45:00David CampeauManual testing264265--3.336--
2014-02-22T13:32:00Never Odd Or EvenManual testing265266--6.673--
2014-02-22T13:32:00Never Odd Or EvenManual testing266267--13.35--
2014-02-22T13:32:00Never Odd Or EvenManual testing267268--26.69--
2014-02-22T13:32:00Never Odd Or EvenManual testing268269--53.38--
2014-02-22T13:32:00Never Odd Or EvenManual testing269270--106.8--
2014-04-01T16:51:00Never Odd Or EvenManual testing270271--213.5--


ECM factoring results:

Old Calculation Method

Total ECM effort:17.679 GHz-days
Estimated T-Level:25.344
DigitsB1CurvesCompleteFacMiss
2011000325 / 1003.2503.815%
2550000325 / 2801.16131.261%
3025000044 / 6400.06993.351%

New Calculation Method

Total ECM effort:17.679 GHz-days
Estimated T-Level:25.344
DigitsB1CompleteFacMiss
201100012.7310.000%
25500001.34925.941%
302500000.10889.793%
3510000000.00799.295%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002789.81
50000500000030.106
25000025000000447.763


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2001-12-01T00:00:00Mattv4_computersEC9F98FBD9C4090C0.033
2016-06-01T18:48:28MadPooManual testingEC9F98FBD9C4090C0.033


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-29T03:54:19Oliver KruseGTX-3
431439029553759955817
A8B982F9FA85EC__no
2017-10-16T19:18:40Oliver KruseThreadripper
431439029553759955817
A8B982F9FA85EC__no
2018-01-04T07:11:44ATHwork
431439029553759955817
A8B982F9FA85EC__no


P-1 factor-bounds graph:
B1 = 5000000, B2 = 200000000 (P-1 stage 2)
B1 = 5000000 (P-1 stage 1)
B1 = 500000, B2 = 10000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
B1 = 15000, B2 = 221250 (P-1 stage 2)
B1 = 15000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2020-10-09T08:34:04+00:00