is 2 4903741 - 1
has 1476174 decimal digits
takes 0.680 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
Actual2676.059465.6716%----6.059465.6716%0.0000%
PrimeNet2610.062662.2951%220004500000.00913.3025%0.071863.5403%1.2452%
GPU722651.487864.6154%320007000000.01372.3743%1.501565.4555%0.8401%
Difference+2+4.5717+1.0563%-32000-700000-0.0137-2.3743%+4.5579+0.2161%+0.2161%

Known prime factors (2 factors, 106.3 bits, 0.00216786% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
49037412261605349211237.71923060
22 × 5 × 1153
-511537.435e-91.358e-52.365e-5
49037414435482387957966005032168.58845225496085111
37 × 163 × 233 × 32183857
2019-07-302333218385720.5750.35250.6582

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
490374110031310694932480405607181766526333106.306
P-1 results:
No P-1 results for M4903741


Trial Factoring results:
No TF results for M4903741


ECM factoring results:

Old Calculation Method

Total ECM effort:0.419 GHz-days
Estimated T-Level:0.100
DigitsB1CurvesCompleteFacMiss
20110002 / 1000.02098.010%
25500002 / 2800.00799.287%

New Calculation Method

Total ECM effort:0.419 GHz-days
Estimated T-Level:0.100
DigitsB1CompleteFacMiss
20110000.06593.752%
25500000.00699.419%


ECM Summary

B1B2factorcurvesGHz-days
50000500000020.419


Lucas-Lehmer results:
No L-L results for M4903741


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-20T06:25:50kkmrkkblmbrbkManual testing
226160534921
A37C23052A374D__no
2018-04-07T02:42:11Oliver KruseGTX-1
226160534921
A37C23052A374D__no
2019-07-30T12:52:38-Anonymous-Newton97
226160534921
443548238795796600503
F90005D1BFE8D72Eno
2019-07-30T14:07:44ATHec2-PRPCFDC
226160534921
443548238795796600503
F90005D1BFE8D72Eno


P-1 factor-bounds graph:
100
101
102
103
100
101
102
103
104
105
106
107
108
TF factor-bounds graph:
267
230
240
250
260
270
280
290
2100
Last modified: 2019-07-30T22:34:51+00:00