is 2 4842883 - 1
has 1457854 decimal digits
takes 0.671 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- L-L tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2676.135665.6716%----6.135665.6716%0.0000%
PrimeNet2610.063462.2951%200004500000.00873.2295%0.072263.5128%1.2177%
GPU722651.506564.6154%320006500000.01322.3257%1.519765.4383%0.8229%
Difference+2+4.6291+1.0563%-32000-650000-0.0132-2.3257%+4.6159+0.2333%+0.2333%

Known prime factors (2 factors, 95.6 bits, 0.00197414% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
4842883203401087927.60021
3 × 7
-373.709e-126.468e-71.227e-6
48428832962827813765137239692168.00630589504369248
25 × 3 × 11 × 1013 × 28595591
2021-07-2010132859559122.5360.31330.5848

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
4842883602642397913662477257125543032995.605
P-1 results:
Exponent "4842883" not found


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2021-07-20T06:56:09ATHec2-P_15000005000000027P-12168.0060.650


Trial Factoring results:
Exponent "4842883" not found


ECM factoring results:

Old Calculation Method

Total ECM effort:0.627 GHz-days
Estimated T-Level:0.150
DigitsB1CurvesCompleteFacMiss
20110003 / 1000.03097.030%
25500003 / 2800.01198.932%

New Calculation Method

Total ECM effort:0.627 GHz-days
Estimated T-Level:0.150
DigitsB1CompleteFacMiss
20110000.09790.776%
25500000.00999.129%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.627


Lucas-Lehmer results:
Exponent "4842883" not found


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-20T19:14:33kkmrkkblmbrbkManual testing
203401087
3DAD2C64183CDA__no
2018-03-29T22:49:15Oliver KruseGTX-1
203401087
3DAD2C64183CDA__no
2021-07-20T08:34:29ATHec2-PRPCF
203401087
296282781376513723969
A832D582610815B5no


P-1 factor-bounds graph:
B1 = 500000, B2 = 50000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
100
101
102
103
104
105
106
100
101
102
103
104
105
106
107
108
TF factor-bounds graph:
267
220
230
240
250
260
270
280
290
2100
Last modified: 2021-07-20T08:34:29+00:00