is 2 4768583 - 1
has 1435487 decimal digits
takes 0.628 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
Actual2676.231265.6716%----6.231265.6716%0.0000%
PrimeNet2610.064462.2951%200004500000.00833.2211%0.072763.5096%1.2145%
GPU722651.530064.6154%300006500000.01222.2841%1.542165.4236%0.8082%
Difference+2+4.7012+1.0563%-30000-650000-0.0122-2.2841%+4.6891+0.2480%+0.2480%

Known prime factors (2 factors, 127.2 bits, 0.00266835% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
47685838626668301170678791859.58290453162933
32 × 72 × 313 × 655301
-3136553010.02730.00690.0127
47685832333494205625915952872167.66124467375377821
3 × 2281 × 3575533447
2019-07-14228135755334479.353137.19269.463

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
476858320130280494638542982202081501347548627339127.243
P-1 results:
No P-1 results for M4768583


Trial Factoring results:
No TF results for M4768583


ECM factoring results:

Old Calculation Method

Total ECM effort:0.396 GHz-days
Estimated T-Level:0.100
DigitsB1CurvesCompleteFacMiss
20110002 / 1000.02098.010%
25500002 / 2800.00799.287%

New Calculation Method

Total ECM effort:0.396 GHz-days
Estimated T-Level:0.100
DigitsB1CompleteFacMiss
20110000.06593.752%
25500000.00699.419%


ECM Summary

B1B2factorcurvesGHz-days
50000500000020.396


Lucas-Lehmer results:
No L-L results for M4768583


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-20T19:26:34kkmrkkblmbrbkManual testing
862666830117067879
342E63974B3DFF__no
2018-03-19T04:19:44treborLaptop
862666830117067879
342E63974B3DFF__no
2019-07-15T01:03:57Niels_Mache_NextcloudSuperDry-X
862666830117067879
233349420562591595287
4D259593930C8583no
2019-07-16T01:42:58kkmrkkblmbrbkc5.large
862666830117067879
233349420562591595287
4D259593930C8583no


P-1 factor-bounds graph:
101
102
103
104
101
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
267
250
260
270
280
290
2100
Last modified: 2019-07-16T01:42:58+00:00