is 2 4811537 - 1
has 1448417 decimal digits
takes 0.634 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
Actual2676.175665.6716%----6.175665.6716%0.0000%
PrimeNet2610.063862.2951%200004500000.00833.2260%0.072163.5114%1.2164%
GPU722651.516364.6154%320006500000.01252.3231%1.528865.4374%0.8220%
Difference+2+4.6593+1.0563%-32000-650000-0.0125-2.3231%+4.6467+0.2342%+0.2342%

Known prime factors (2 factors, 110.0 bits, 0.00228588% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
4811537577769362971135.7506004
22 × 19 × 79
-19791.236e-94.252e-67.382e-6
4811537222487536901677539581932374.2362312021469456408
23 × 3 × 38119 × 2527197143
2019-06-063811925271971431,102.926.29449.097

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
4811537128546482464446599568608656223132134109.986
P-1 results:
No P-1 results for M4811537


Trial Factoring results:
No TF results for M4811537


ECM factoring results:

Old Calculation Method

Total ECM effort:0.397 GHz-days
Estimated T-Level:0.100
DigitsB1CurvesCompleteFacMiss
20110002 / 1000.02098.010%
25500002 / 2800.00799.287%

New Calculation Method

Total ECM effort:0.397 GHz-days
Estimated T-Level:0.100
DigitsB1CompleteFacMiss
20110000.06593.752%
25500000.00699.419%


ECM Summary

B1B2factorcurvesGHz-days
50000500000020.397


Lucas-Lehmer results:
No L-L results for M4811537


PRP results:
dateuseridcompidcofactorsres64PRP
2017-11-20T03:48:35Chang Chia-Tchehomura
57776936297
71E158FD71D3FC__no
2018-01-08T15:45:50kkmrkkblmbrbkold
57776936297
71E158FD71D3FC__no
2019-06-14T17:59:44ANONYMOUS
57776936297
22248753690167753958193
71E158FD71D3FCCBno


P-1 factor-bounds graph:
100
101
102
103
104
105
100
101
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
267
230
240
250
260
270
280
290
2100
Last modified: 2019-06-14T17:59:44+00:00