is 2 9397319 - 1
has 2828875 decimal digits
takes 2.597 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LAB0C4B678B4F0C1Bdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2673.162064.1791%17500038937500.15134.1736%3.313365.6741%1.4950%
PrimeNet2640.378862.5000%4000011000000.03923.4947%0.417963.8105%1.3105%
GPU722686.342864.7059%6000014000000.05332.4597%6.396165.5740%0.8681%
Difference-1-3.1808-0.5268%+115000+2493750+0.0980+1.7139%-3.0828+0.1001%+0.1001%

Known prime factors (1 factor, 70.7 bits, 0.00075183% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
939731918552002248225280792412270.65298709016093980
22 × 3 × 5 × 1645150268233
2014-08-125164515026823328.73235,92167,091

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-07-30T00:00:00Josh Findleyv4_computers50000612500---0.032--2.177%
2012-09-14T11:52:00James Heinrichi7-9201750003893750---0.151--4.174%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-01-29T00:00:00ANONYMOUSv4_computers21255--0.001--
1999-03-26T00:00:00ANONYMOUSv4_computers21264--0.379--
2013-09-05T13:22:00NesowaManual testing264265--0.398--


ECM factoring results:

Old Calculation Method

Total ECM effort:0.841 GHz-days
Estimated T-Level:0.100
DigitsB1CurvesCompleteFacMiss
20110002 / 1000.02098.010%
25500002 / 2800.00799.287%

New Calculation Method

Total ECM effort:0.841 GHz-days
Estimated T-Level:0.100
DigitsB1CompleteFacMiss
20110000.07792.596%
25500000.00799.291%


ECM Summary

B1B2factorcurvesGHz-days
50000500000020.841


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2000-07-12T00:00:00ANONYMOUSv4_computersAB0C4B678B4F0C1B2.597
2003-08-25T00:00:00Josh Findleyv4_computersAB0C4B678B4F0C1B2.597


PRP results:
dateuseridcompidcofactorsres64PRP
2019-09-04T08:14:28treborLaptop
1855200224822528079241
086272214EB3FA__no
2020-11-23T05:49:08kutenshadar
1855200224822528079241
086272214EB3FAADno


P-1 factor-bounds graph:
B1 = 175000, B2 = 3893750 (P-1 stage 2)
B1 = 175000 (P-1 stage 1)
B1 = 50000, B2 = 612500 (P-1 stage 2)
B1 = 50000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2020-11-23T05:49:08+00:00