is 2 1943467 - 1
has 585042 decimal digits
takes 0.105 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26715.289168.6567%500000150000000.10155.1054%15.390670.2569%1.6002%
PrimeNet2580.019863.7931%80001400000.00122.4652%0.021064.6857%0.8926%
GPU722620.316166.1290%8000900000.00101.1523%0.317166.5193%0.3903%
Difference+5+14.9730+2.5277%+492000+14910000+0.1005+3.9531%+15.0735+3.7376%+3.7376%

Known prime factors (4 factors, 247.6 bits, 0.01273960% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
194346786756366891033.0142232
23 × 32 × 31
-9318.733e-108.022e-71.441e-6
194346724764704742361131651.137637126968
23 × 3 × 193 × 263 × 523
2014-06-182635230.00022.180e-54.210e-5
1943467617524709644185990677112375.70915887193084425565
32 × 5 × 7 × 1783 × 28286894897
2021-03-211783282868948975,100.6121.23226.42
19434672565579973376052706077396892787.72966005236347621356732
22 × 29 × 223 × 487 × 5239460577427
2022-03-24487523946057742731,528,59022,45541,940

11 Composite Factors:
exponentprime factorscomposite factordigitsbits*
1943467214849581055080511915498572684.152
194346753574200273531721162581474684887933108.723
1943467222580397455849260508427977324984972137120.744
194346715292817105450552634445198694668844734339126.846
194346763535830533572674095222136894544782718885742138.867
1943467132674925158213596310718370955363938082137536732749159.860
19434671584309028127985371699713056504060990019637308187950163.438
194346755121378244314953762834905044729324090949795211744
73
52171.881
194346713744889531141082878373332883778961602508028261388
1453458631
60196.453
194346739234945302246672236766375887727350517891838264526
794178127696327
65214.576
194346734038813095507942378544806537313234698178558298138
2742795316243581571741303
75247.590
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-03-16T12:42:13alpertronManual testing5000001500000012-
skipped known factor: 8675636689
skipped known factor: 2476470474236113
--0.101--5.105%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2014-06-18T11:38:00TJAOIManual testing??51.137164.16955e-50.2339.23190e-5


ECM factoring results:

Old Calculation Method

Total ECM effort:20.631 GHz-days
Estimated T-Level:24.464
DigitsB1CurvesCompleteFacMiss
2011000250 / 1002.5008.106%
2550000250 / 2800.89340.883%

New Calculation Method

Total ECM effort:20.631 GHz-days
Estimated T-Level:24.464
DigitsB1CompleteFacMiss
20110008.8280.015%
25500000.78445.680%
302500000.04995.262%
3510000000.00299.777%


ECM Summary

B1B2factorcurvesGHz-days
500005000070.293
500005000000281.947
500005000000110.765
50000750000016013.37
500007500000514.260


Lucas-Lehmer results:
No L-L results for M1943467


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-05T03:43:54Oliver KruseGTX-1
8675636689
2476470474236113
A025CFF2893986__no
2017-11-11T06:58:37kkmrkkblmbrbkc4.xlarge
8675636689
2476470474236113
A025CFF2893986__no
2021-03-21T23:07:51Oliver KruseThreadripper-PC
8675636689
2476470474236113
61752470964418599067711
65E842629F83355Cno
2022-03-29T23:35:04mrhlanai
8675636689
2476470474236113
61752470964418599067711
256557997337605270607739689
65E842629F83355Cno
2022-03-30T01:22:27JackBlockWin10
8675636689
2476470474236113
61752470964418599067711
256557997337605270607739689
65E842629F83355Cno


P-1 factor-bounds graph:
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
100
101
102
103
104
105
106
100
101
102
103
104
105
106
107
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109
1010
1011
1012
1013
TF factor-bounds graph:
267
2
230
240
250
260
270
280
290
2100
Last modified: 2022-03-30T01:22:27+00:00