is 2 4883083 - 1
has 1469955 decimal digits
takes 0.677 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
Actual2676.085165.6716%----6.085165.6716%0.0000%
PrimeNet2610.062962.2951%220004500000.00913.3002%0.072063.5394%1.2443%
GPU722651.494164.6154%320007000000.01372.3726%1.507865.4549%0.8395%
Difference+2+4.5910+1.0563%-32000-700000-0.0137-2.3726%+4.5773+0.2167%+0.2167%

Known prime factors (1 factor, 39.3 bits, 0.00080386% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
48830836551925446091239.25367088
24 × 7 × 599
-165992.282e-89.600e-61.226e-5

P-1 results:
No P-1 results for M4883083


Trial Factoring results:
No TF results for M4883083


ECM factoring results:

Old Calculation Method

Total ECM effort:0.629 GHz-days
Estimated T-Level:0.150
DigitsB1CurvesCompleteFacMiss
20110003 / 1000.03097.030%
25500003 / 2800.01198.932%

New Calculation Method

Total ECM effort:0.629 GHz-days
Estimated T-Level:0.150
DigitsB1CompleteFacMiss
20110000.11589.102%
25500000.01198.938%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.629


Lucas-Lehmer results:
No L-L results for M4883083


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-20T17:04:16kkmrkkblmbrbkManual testing
655192544609
6F2B924262F8A0__no
2018-04-02T04:00:56ATHec2-PRPCFDC
655192544609
6F2B924262F8A0__no


P-1 factor-bounds graph:
100
101
102
100
101
102
103
TF factor-bounds graph:
267
230
240
250
260
270
280
290
2100
Last modified: 2019-07-22T17:33:52+00:00