is 2 4783187 - 1
has 1439883 decimal digits
takes 0.630 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
Actual2676.212265.6716%----6.212265.6716%0.0000%
PrimeNet2610.064262.2951%200004500000.00833.2228%0.072563.5102%1.2151%
GPU722651.525364.6154%300006500000.01222.2853%1.537565.4240%0.8087%
Difference+2+4.6869+1.0563%-30000-650000-0.0122-2.2853%+4.6747+0.2476%+0.2476%

Known prime factors (3 factors, 136.1 bits, 0.00284512% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
4783187315690343928.23433
3 × 11
-3117.530e-126.560e-71.166e-6
478318716354003344231340.573170953
170953
2008-09-0811709533.071e-80.00180.0033
47831871792658992330025624332167.28118739169013568
26 × 1733 × 168955289
2019-05-2117331689552896.73701.75773.2824

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
47831875162800925163115770892168.807
4783187565925132170700158543526845192995.515
478318729317151155629220980134413653115933107.853
47831879255141504103435152041429232256041489753741136.087
P-1 results:
No P-1 results for M4783187


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-09-08T00:13:00Will EdgingtonManual testing??40.573138.61683e-111.3441.83943e-10


ECM factoring results:

Old Calculation Method

Total ECM effort:0.594 GHz-days
Estimated T-Level:0.150
DigitsB1CurvesCompleteFacMiss
20110003 / 1000.03097.030%
25500003 / 2800.01198.932%

New Calculation Method

Total ECM effort:0.594 GHz-days
Estimated T-Level:0.150
DigitsB1CompleteFacMiss
20110000.09790.776%
25500000.00999.129%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.594


Lucas-Lehmer results:
No L-L results for M4783187


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-20T19:30:01kkmrkkblmbrbkManual testing
315690343
1635400334423
4EC5DB6CECBA75__no
2018-03-21T16:52:29krackerGRID-11
315690343
1635400334423
4EC5DB6CECBA75__no
2019-05-21T22:55:09Niels_Mache_NextcloudSuperDry-X
315690343
1635400334423
179265899233002562433
C76ED0E94D77C78Fno
2019-05-22T23:53:43kkmrkkblmbrbkc5.large
315690343
1635400334423
179265899233002562433
C76ED0E94D77C78Fno


P-1 factor-bounds graph:
100
101
102
103
104
100
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
267
2
220
230
240
250
260
270
280
290
2100
Last modified: 2019-05-22T23:53:43+00:00